Marketplace SEO: The Complete Founder Playbook for Organic Growth

Most marketplace founders treat SEO as a marketing channel. Something you bolt on after the product works. A task you hand to a freelancer or an agency once the budget allows it.

That framing is wrong.

Marketplace SEO is a system-design problem. It sits at the intersection of site architecture, content quality, crawl efficiency, keyword strategy, and community leverage. Get the architecture wrong and no amount of blog posts will fix it. Get the content incentives wrong and your providers will create thousands of pages that actively hurt your rankings. Get the keyword strategy wrong and you will optimize for searches nobody makes while ignoring the ones that would actually bring customers.

The real job is to build a system where your site structure scales cleanly, your community creates content that Google values, your keyword strategy matches actual search intent, and your provider relationships compound into links and authority over time.

Michael Caldwell, who founded Gigmasters in 1997 and currently runs PetWorks, puts it directly: "Marketplace SEO is its own thing. It's not something you can do at arm's length. It needs to be woven into the DNA of the company."

That is what this guide is about. Not generic SEO advice repackaged for marketplaces, but the specific challenges, opportunities, and operating playbook that marketplace founders need to build organic search into a durable growth engine.

This guide draws on insights from three practitioners who have spent years in the intersection of marketplaces and SEO:

• Mike Van der Haiden, CEO of Portal Ventures, an agency that specializes in marketplace SEO and invests in early-stage marketplaces. Portal Ventures has worked with marketplaces like Flippa, Fresher, and Luxury Escapes.
• Michael Caldwell, who founded Gigmasters (now The Bash) in 1997 and currently runs PetWorks, a marketplace connecting pet parents with pet service providers. He has over two decades of experience building SEO-backed marketplace growth.
• Gregory Edwards, SEO manager at BlueArray, a UK-based SEO consultancy that works with some of the biggest marketplace brands in the UK including Zoopla, Click Mechanic, Hey Car, and My Builder.

In This Guide

• The Marketplace SEO Flywheel
• Should You Invest in Marketplace SEO?
• The Marketplace SEO Decision Framework
• Marketplace SEO Challenges
• Marketplace SEO Opportunities
• Site Structure and Information Architecture
• Technical SEO for Marketplaces
• User-Generated Content Optimization
• Keyword Research and Strategy
• Content Strategy That Ranks
• Programmatic SEO for Marketplaces
• Link Building for Marketplaces
• AI Overviews and the Changing SERP
• The Marketplace SEO Toolkit
• The Operator Checklist
• What Often Gets Missed
• What I Would Build First
• The Shortest Honest Conclusion

How to Read This Guide

This guide is intentionally exhaustive. The first sections establish whether SEO is the right investment for your marketplace and lay out the challenges and opportunities. The middle sections go deep on each pillar of marketplace SEO: site structure, technical SEO, user-generated content, keywords, content strategy, programmatic SEO, and link building. The final sections provide an operator checklist, a prioritized build sequence, and a conclusion.

If you are building from scratch, read linearly. If you are already executing, use the table of contents to jump to the section most relevant to your current challenge.

Recommended Reading Paths

If you do not want to read this linearly, use the path that matches the marketplace you are building:

• Local services marketplaces (plumbers, tutors, cleaners, pet services): start with Site Structure and Information Architecture, then Technical SEO for Marketplaces, then User-Generated Content Optimization, then Programmatic SEO for Marketplaces, then Link Building for Marketplaces.
• Product and ecommerce marketplaces (goods, resale, wholesale): start with Technical SEO for Marketplaces (especially faceted navigation), then Keyword Research and Strategy, then Content Strategy That Ranks, then Programmatic SEO for Marketplaces.
• B2B and specialized marketplaces (professional services, enterprise, niche verticals): start with The Marketplace SEO Decision Framework (to validate whether SEO is your best channel), then Content Strategy That Ranks, then Link Building for Marketplaces.
• New and pre-launch marketplaces: start with Should You Invest in Marketplace SEO, then Site Structure and Information Architecture, then What I Would Build First, then The Operator Checklist.

Quick Orientation Table

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The Marketplace SEO Flywheel

Before diving into the individual components, it helps to understand how they connect. Marketplace SEO is not a checklist of independent tasks. It is a flywheel where each component accelerates the others.

The flywheel works like this:

1. Clean site structure ensures Google can efficiently crawl and index your pages, so your existing content actually appears in search results.
2. Quality user-generated content from providers adds original, keyword-rich pages at scale, expanding the surface area of queries your marketplace can rank for.
3. Keyword-informed content strategy fills the gaps between your commercial pages and the informational queries your audience asks, building topical authority.
4. Higher rankings bring more demand-side traffic, which makes your marketplace more valuable to suppliers.
5. More suppliers create more listings, reviews, and content, expanding your SEO footprint further.
6. Supplier relationships generate natural backlinks through badges, contributed articles, and shared content, increasing domain authority.
7. Higher domain authority makes all your pages more competitive, accelerating rankings across the board.

Each component feeds the next. A marketplace that runs all parts of this flywheel has a compounding advantage that gets harder for competitors to replicate over time. A marketplace that only runs one part, say content marketing without technical SEO, or technical SEO without link building, will see diminishing returns.

The rest of this guide breaks down each component of the flywheel in detail.

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Should You Invest in Marketplace SEO?

Marketers today have a vast variety of options for their marketing mix: social media, paid advertising, influencer marketing, PR, content marketing, community building, and more. Before committing to SEO as a major growth channel, it is worth understanding what makes it compelling and what makes it difficult.

Why SEO matters for marketplaces

Almost 30% of all web traffic continues to come from search engines. For a single channel, that is a considerable share. And organic search traffic is often high quality because Google has gotten very good at ranking the best content. The traffic search engines bring is usually highly targeted. Organic search results also tend to appear more reliable and authoritative to users than paid advertisements.

A further big benefit of SEO as a growth strategy is that success does not hinge on the size of your marketing budget. Michael Caldwell knows this from experience. Gigmasters was a bootstrapped business for several years, and yet the team managed to accumulate impressive growth through SEO:

"SEO is very well suited for a bootstrapped company. It's certainly not free. You spend hours and hours on it, but it's something you can do without a huge marketing budget. You just need hard work, a lot of research, a lot of testing, and trial and error."

Mike Van der Haiden adds the valuation angle. From his experience at Portal Ventures working with marketplace clients, SEO does not just drive traffic. It drives enterprise value:

"SEO was adding a lot more value than just traffic and leads. It was actually accounting for the main growth driver of the valuation of the business."

Why SEO is hard for marketplaces

The same characteristics that make marketplaces powerful also make their SEO more complex. Mike Van der Haiden describes the scope challenge:

"We started with the typical classified model, think of a real estate portal like Zillow or an automotive portal like CarGurus. And disproportionally, SEO was adding a lot more value. But these are gigantic websites in most cases."

Michael Caldwell experienced this firsthand with Gigmasters. What started as a small number of categories (bands, DJs, string quartets) eventually grew to 50 or more categories (reggae bands, mariachi bands, acoustic guitarists), each needing optimization across multiple locations:

"We would try to hire local SEO companies or experts. And they would become quickly overwhelmed with the scope of what we were trying to optimize. They're not used to it. If you hire somebody who maybe they've done work for one restaurant or a doctor's office and they have 10 total keywords, that's a whole different ballgame from a marketplace where you're optimizing across 50, maybe 100 categories multiplied by multiple locations."

This is why Michael insists that marketplace SEO is its own discipline: "Even though we were a small company in terms of number of employees and revenue, what we were trying to undertake from an SEO point of view was big."

How SEO works at a high level

Search engines like Google exist to help searchers find what they are looking for on the web. Google sends bots to discover and read (crawl) pages on the internet, then collects the information the bots find and stores, analyzes, and organizes it (indexing). Google uses a variety of criteria to understand who has the best answers and to which questions, and based on those criteria, it ranks the content. The highest ranked content is presented on the search engine results page (SERP).

SEO helps you signal to Google that when someone types in a specific search query, your marketplace is the best match and should be shown higher than other results. In practical terms, SEO helps you ensure search engines can crawl and index your site efficiently, identify the searches where your marketplace can be a great match for what someone is looking for, and create and optimize content that ranks high on search results pages.

Ranking well matters because the search results page is a crowded place. First come the ads. Then Google keeps developing its search algorithm and adding new SERP features: featured snippets, People Also Ask sections, video and image results, AI overviews. All of these compete for user attention. But organic results still matter enormously. The first organic result gets clicked about 30% of the time, the third less than 20%, and only about 4% click on results 8 through 10. Moving from position 10 to position 1 makes you roughly 10 times more likely to receive a click.

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The Marketplace SEO Decision Framework

Before diving into the mechanics of marketplace SEO, you need to answer three questions honestly. Getting the answers wrong does not mean SEO is worthless for your marketplace. It means you should sequence your investments differently.

Question 1: Is there existing organic demand for what your marketplace offers?

Mike Van der Haiden says this is the most common blind spot for marketplace founders:

"When you start a marketplace, the real golden nugget is: understand how people search for your product or service online. What are people typing in when they're searching for your products?"

Some marketplaces come to market with a product that already has existing search demand. This is typically the case for marketplaces whose supply side consists of established businesses. People often turn to Google looking for local services, events nearby, or real estate in a specific city. Large global players like Zillow, Eventbrite, and Thumbtack have leveraged these opportunities and used SEO as a key growth tactic.

The situation is very different for marketplaces like Uber, Lyft, and Airbnb. When these marketplaces first started, nobody was searching for ride sharing because the service did not truly exist yet. Even today, 90% of Uber's organic traffic comes from branded searches. People are not looking for "ride sharing in Melbourne." They are looking for "Uber Melbourne." Or more likely, they are already downloading the app and not searching at all.

Mike's framework for evaluating this is practical:

"Rolling out a marketplace where there's existing demand means you can capitalize on that search demand a lot quicker and scale the marketplace a lot faster. But if there's no existing demand, understand whether you actually need to start creating educational pieces around what your services are."

Question 2: Are there stronger acquisition channels you should focus on first?

SEO can be a powerful tool for building sustainable, defensible marketplace growth. But it is not the only tool. Like any marketplace growth strategy, what works depends on your marketplace type, niche, and audience.

Some marketplaces have strong word-of-mouth or a social media component that makes investing in SEO a secondary priority. Poshmark, for example, is as much a social network as it is a product marketplace. Its growth strategy has centered around user engagement and community building since the early days.

Another typical case is if you are building a mobile marketplace app with a minimal web footprint. In this case, your marketing priorities might lie elsewhere. Michael Caldwell acknowledges this but pushes back:

"Although I would argue that you're probably missing out on opportunities to acquire customers on the web that you could then drive to the app."

Some marketplaces cater to audiences that do not habitually turn to Google for information. B2B businesses in very specialized expert fields are an example. Marketplaces like Scientists.com tackle complex B2B transactions where quality and reliability are essential. Both marketplace parties are probably much more likely to be found through direct B2B sales and outreach than on Google.

Question 3: Is now the right time to invest in SEO?

Generally speaking, the right time to start thinking about SEO is now, especially for technical considerations. Gregory Edwards says:

"If you lay a good foundation for site quality and information architecture, it can get rid of most of the legwork when it comes to driving traffic through SEO."

But marketplaces might want to hold off on making a bigger investment until they have built a high-quality initial supply. According to research by Lenny Rachitsky, most marketplaces have leveraged SEO for their demand-side acquisition and used different approaches to build supply. This makes sense. Building high-quality supply usually requires building relationships and selling your solution, while the demand side is more likely to Google solutions to their questions.

Michael Caldwell followed exactly this path with both Gigmasters and PetWorks:

"We didn't think about SEO right away. With Gigmasters, we knew we first needed to just get musicians on the platform. We sent out lots of emails, we went to clubs, we went to music festivals. When you're bringing customers to the platform, that's the moment when you need to start thinking about making the investment in SEO."

However, even if growing demand is a priority, your growth objectives may mean other growth strategies suit you better. If you need to see substantial growth very quickly, SEO might not work for you. For all its potential, SEO is slow to provide return on investment. If you do not have six months to wait for traffic to accumulate, you might consider starting with a different growth strategy.

Michael Caldwell adds one important nuance about team building:

"I would highly recommend founders to keep SEO expertise in mind already when building the team. You want to make sure that whether it's a founder or whether it's programmers that you're hiring, they need to understand how important SEO is to you as a company."

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Marketplace SEO Challenges

Marketplace websites have characteristics that create distinct SEO challenges. Understanding these is essential before attempting to fix them, because most of these problems are structural and require architectural solutions rather than quick fixes.

Challenge 1: Site bloat and thin content

The most common SEO problem for marketplaces is website bloat. Mike Van der Haiden describes the pattern:

"A lot of marketplaces go out and build pretty big websites. They've got all this supply stuff, but they spread themselves really thin. If you are a new marketplace and you don't really have the supply side to support something internationally or nationally, then it doesn't make sense to cut the pages so thin that every location page or every category page only has one product or one piece of inventory."

The result is what Mike calls the Yellow Pages problem: thousands of pages that each contain one or two listings, which Google sees as near-duplicate thin content.

Gregory Edwards sees this regularly with BlueArray's marketplace clients:

"There's always been some pages that have been created and then forgotten about, or they've been created and neglected yet they still exist. I've taken on countless page quality reviews, looking at the pages on the site, reviewing the quality of them, playing in some user behavior data, playing in some performance data, and then providing some recommended actions on how to handle them."

Michael Caldwell experienced this directly:

"If you spin up a new category and now suddenly you're multiplying that across 50 states, 250 cities, you can't possibly have enough providers in every single of those locations for that category. You definitely want to avoid a situation where you have now just spawned 500 new pages that have nothing on them, because I promise you, you will pay a price for that."

Challenge 2: Crawl budget waste

Bloated sites create a secondary problem: crawl budget waste. Google allocates a finite amount of crawling resources to each website. When your site has millions of pages but Google can only index a fraction of them, the crawl budget gets wasted on pages that should not exist.

Mike Van der Haiden explains the mechanics:

"What we typically see is websites that are significantly underutilized because Google is trying to crawl five million pages but has actually indexed only 100,000 of those. There might be pages with thin content, pages with inventory that no longer exists, or certain filter parameters that have gone astray. Google is still spending its time crawling those pages just to see if they've been updated."

The fix is not to simply generate more pages. It is to ensure that the pages Google crawls are actually worth indexing:

"What you want to do is really understand and keep an eye on your Search Console. It will give you an understanding of how many pages of your website are actually indexed in Google and how many has it found that it's simply not indexing. If you cut off those underperforming pages, Google can focus on the pages that actually bring value."

Challenge 3: Duplicate content and cannibalization

Marketplaces naturally create duplicate content in several ways. Category pages may overlap when the taxonomy is not clearly defined. Search pages and category pages may target the same keywords. Filter combinations may generate indexable pages that compete with each other.

Gregory Edwards sees this as one of the three primary marketplace SEO challenges:

"You need to ensure that your categories aren't overlapping. If you had a category for Samsung TVs and then you had a separate, discoverable, indexable page for Samsung TVs as well, they could cannibalize each other. Make sure that across the site all your categories are unique."

He also warns against blindly copying competitors:

"If a competitor has a specific category, it doesn't mean it's right for your site. You really need to consider what's going to suit your audience and do you have the inventory there?"

Challenge 4: Information architecture complexity

Gregory Edwards identifies information architecture as a core challenge that can go wrong in two directions:

"It can be really broad, missing out on additional traffic opportunities from not fully mapping or creating subcategories. So say if you had a category on your site like computers, if you didn't subcategorize that into laptops and desktops, you've got this top-level page that's trying to target too many keywords. Then there's also the flip side where it's too narrow and they've got really specific categories that either cannibalize each other or they're spread too thin."

Finding the right level of granularity is one of the hardest architectural decisions in marketplace SEO, and it depends on how much supply you actually have to support each level of the taxonomy.

Challenge 5: Dynamic and user-generated content quality

Unlike most websites where a content team controls every page, marketplace pages are largely created by users. Listing pages, profile pages, and review content are all generated by suppliers and buyers. This creates a quality control problem.

Gregory Edwards describes it plainly:

"It's unlikely that when users are signing up to your site, they have SEO in mind. Users want to get on the site, they want to list their product or service, and they want to begin generating sales. As a result, you could have hundreds, potentially thousands of low-quality profile pages or listing pages on your site, pulling down your overall perceived site quality."

Challenge 6: The scope of optimization

Michael Caldwell highlights a challenge that is unique to marketplaces and rarely discussed in generic SEO guides: the sheer scope of what needs to be optimized.

"SEO is now so broad that you almost need to have one person that focuses on technical SEO and then another person that focuses on things like keyword research and link building. It's a little bit unrealistic to think, 'Oh, I have my one SEO person.' For a whole marketplace, they're going to be responsible for all aspects of it. It's just not realistic anymore."

This is why he consistently advocates for marketplace SEO being part of the founding team's DNA rather than something outsourced to a generalist agency.

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Marketplace SEO Opportunities

The same characteristics that make marketplace SEO challenging also create opportunities that most other websites cannot access.

Opportunity 1: User-generated content as an SEO engine

Every listing, profile, review, and question posted by a marketplace user is original content. If the quality is managed well, this content becomes a massive SEO asset. Michael Caldwell treats user-generated content as the heartbeat of marketplace SEO:

"Those listings, it's an opportunity for SEO. It's rich content. It's original content provided by pet care providers. We love it because it's the heartbeat of the marketplace, but it's just such an SEO magnet."

The key insight is that user-generated content scales with the marketplace itself. As more suppliers join and create listings, the marketplace's content footprint grows organically. This is a structural advantage that blogs and corporate websites cannot replicate.

Opportunity 2: Community-driven content and expertise

Marketplaces sit on top of communities of domain experts. Suppliers in a pet services marketplace know about pet nutrition. Service providers in a home improvement marketplace know about renovation techniques. This expertise can be channeled into content that Google values highly.

Michael Caldwell leverages this directly at PetWorks:

"We have an articles section, a blog section of our site, and it's all articles that the pet pros that list with us contribute. They have a bio and they have author credit. We let them link back to their own website. We share it out on our social media."

This creates a win-win: the provider gains visibility and credibility while the marketplace gains original, expert content that builds topical authority.

Opportunity 3: Natural link building through supplier relationships

Most businesses struggle to earn backlinks because they have no natural reason for other sites to link to them. Marketplaces are different. Every supplier has their own website, social media presence, and professional network. Those relationships can be leveraged for organic link building.

Michael Caldwell describes the provider badge technique:

"When a pet pro signs up and we've approved them for our platform, we provide them with a snippet of HTML and a PetWorks approved badge that they can place on their website. That links back to their PetWorks listing. Even if a small percentage of those 5,000 pet care providers provide a link back to us from their website, it really helps build links in a really organic way."

Opportunity 4: Demand-side SEO that indirectly builds supply

One of the most underappreciated opportunities in marketplace SEO is the indirect effect that demand-side ranking has on supply acquisition. Michael Caldwell discovered this with PetWorks:

"Even though we focus primarily on the demand side, the supply side is watching. If you're showing SEO capabilities and strength, that will attract suppliers to your platform. The pet pros that are either evaluating PetWorks or doing their own keyword searches, when they see your marketplace showing up on the first page of Google, they say to themselves, 'I can leverage their SEO strength by becoming part of their marketplace.'"

This creates a virtuous cycle: better SEO brings more demand, more demand attracts more supply, more supply creates more content, more content improves SEO.

Opportunity 5: Niche verticalization against incumbents

Mike Van der Haiden points out that marketplaces can carve out SEO wins even against massive incumbents by going vertical:

"Zillow is very broad. You're not going to go head to head with it unless you've got really deep pockets. But you could carve out a little niche that says, 'I'm just going to show beachfront properties.' You're not going to rank for 'apartments in New York,' but you'll definitely be able to capture the long-tail searches of 'beachfront apartments Miami, LA.' Smaller pipe, but you can dominate that smaller pipe."

He points to how every category that Craigslist once owned has now been verticalized:

"Every single category of Craigslist has been split into its own little marketplace and someone has attacked that particular niche. People are getting more and more niche and because they're able to dominate and be an expert on that particular topic."

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Site Structure and Information Architecture

Site structure is the foundation on which everything else in marketplace SEO is built. Get it right from the beginning and every subsequent SEO effort becomes easier. Get it wrong and you will spend years trying to undo architectural debt.

Why site structure matters so much for marketplaces

Gregory Edwards puts it simply:

"If you lay a good foundation for site quality and information architecture, it can get rid of most of the legwork when it comes to driving traffic through SEO."

Michael Caldwell agrees and adds a practical reason why early decisions matter disproportionately:

"It's so important to get that right from the beginning, because it's really hard to just change your site structure later. If you change the URLs or if you change the way things link, you have to make sure that there's 301 redirects in place and there's just a lot of work going into changing. So you want to do your best to get it as close to right out of the gate as possible."

The hierarchy: homepage, categories, locations, listings

Michael Caldwell describes his approach to marketplace site structure. Before doing anything technical, he starts on paper:

"Before we did anything with regard to SEO, I just on a piece of paper sketched out the hierarchy of the site that I wanted. Starting with the home page, because of course that is in most cases the most powerful page that you have with regard to SEO. And then you want to decide, 'What is the next level of importance?'"

His preferred hierarchy for PetWorks is:

1. Homepage — the most powerful page, linking to the next level
2. Category pages — pet training, pet grooming, dog walking, etc.
3. Location pages — city or state-level pages within each category
4. Listing pages — individual provider profiles

"You have to make these decisions. Which pages are going to be one click from the home page, which pages are going to be two clicks and three clicks. Once you go deeper than three clicks, it may not see the light of day unless you're a very powerful domain."

The category-first vs location-first debate

Michael Caldwell notes that the order of the middle layers is debatable:

"I like to do homepage, then categories, then a location-based level, then the listing. There's an SEO person that I worked with for many years who sometimes argued that you might want to do location first and then category. I don't think there's one just definitively right answer."

The choice depends on how your specific audience searches. For a marketplace like Thumbtack, people typically search by location first: "plumbers near me" or "hair dressers in Idaho." For a marketplace organized around specific product categories, category-first may make more sense.

URL structure conventions

Gregory Edwards emphasizes URL structure as a critical early decision:

"Having a clearly defined URL structure for those key areas can make it easy to scale. If you had trainers, it would be /trainers/ and then a brand or a color. It also makes it fairly easy to assess how your site's performing. We see regularly where clients haven't necessarily considered the URL structure, so when you're trying to look into specific areas on large-scale sites, it can be quite difficult."

A practical URL convention for marketplaces:

/                                     → homepage
/pet-training/                        → category page
/pet-training/houston/                → category + location page
/pet-training/houston/jane-smith/     → individual listing

This structure is clean, scalable, and makes it easy to analyze performance by section in analytics tools.

XML sitemap splitting

Gregory Edwards recommends splitting XML sitemaps by section:

"Split your XML sitemaps into the various areas of your site. If you split your XML sitemaps, you upload them to Google Search Console, you can get an understanding of how Google in particular is indexing each section. So you can see if there's a particular area of your site that's not being indexed at all. Is it a quality issue? Do you need to link to them more?"

For a marketplace, this means separate sitemaps for:

• Category pages
• Location pages
• Listing/profile pages
• Blog/content pages
• Static pages

This gives you granular visibility into how Google treats each section and helps you diagnose indexing problems quickly.

Programmatic threshold rendering

One of Michael Caldwell's most practical insights is about managing thin content through programmatic logic. When you add a new category, you cannot instantly have enough providers in every location to justify location-specific pages:

"A lot of programming work has gone into how pages render when it's a new category and you haven't yet reached that threshold of providers in that category. You might not have any locations initially. It might be for certain categories that are new that it just goes homepage, then right to listings. And then only when you reach a certain threshold, then reintroduce the location hierarchy for that particular category."

This is a critical architectural pattern: do not create pages that your supply cannot support. The hierarchy should expand and contract based on actual supply density.

Things to consider when adding pages

Gregory Edwards recommends a simple test before creating any new page:

"When you are actually adding pages to the site, you really need to consider whether they're actually adding value. What are the specific purposes of those pages? Will your users use them? Should you make them indexable? If they don't possess a purpose or they overlap with other pages, then you need to ask yourself why you would need them on your site."

This applies equally to category pages, location pages, and filter-generated pages. Every page on a marketplace should pass two tests:

1. Does it serve a user need? Would someone landing on this page find what they are looking for?
2. Does it have enough unique content? Is it meaningfully different from other pages on the site?

If the answer to either question is no, the page should not be indexable.

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Technical SEO for Marketplaces

Technical SEO ensures that search engines can efficiently discover, crawl, understand, and index your marketplace pages. For marketplaces, technical SEO is disproportionately important because the sites are large, dynamic, and constantly changing.

Crawl budget management

Mike Van der Haiden describes the core problem:

"What tends to happen is naturally the website is tentacular. Supply side might dry up in certain categories or certain locations and then what happens to that content or those pages. What we typically see is websites that are significantly underutilized because Google is trying to crawl five million pages but has actually indexed only 100,000."

The solution starts with monitoring. Google Search Console provides a free view into how many of your pages are indexed versus how many Google has found but chosen not to index. A healthy marketplace should have most of its discoverable pages indexed. If you see a large gap, that signals a quality or structural problem.

Practical steps for crawl budget optimization:

1. Check your index coverage report in Google Search Console regularly. Look at the ratio of indexed pages to discovered but not indexed pages.
2. Identify page types with low index rates. Are location pages with thin content being ignored? Are old listing pages for inactive providers still being crawled?
3. Remove or no-index pages that add no value. Empty category pages, expired listings, parameter-generated duplicates.
4. Use robots.txt strategically. Block crawling of URL patterns that generate low-value pages (search result pages, filter combinations, session-based URLs).
5. Submit XML sitemaps with only the pages you want indexed. Do not include pages you have no-indexed or that return 404s.

Thin content identification and handling

Gregory Edwards has a systematic approach to identifying and handling thin content:

"I've taken on countless page quality reviews: looking at the pages on the site, reviewing the quality of them, playing in some user behavior data, playing in some performance data, and then providing some recommended actions on how to handle them."

For marketplace pages, thin content typically appears in several forms:

Listing pages with minimal descriptions. When providers write one or two sentences and leave most fields blank. Solutions include no-indexing pages below a content threshold, providing writing guides, and using listing strength meters (covered in detail in the UGC section below).

Category pages with insufficient supply. When a category page shows one or two results. The solution is programmatic threshold rendering: hide the page or consolidate it into a parent page until enough supply accumulates.

Location pages with no local supply. When you create pages for every city but only have providers in a few. The solution is to only create location pages where you have meaningful supply.

Expired or inactive listings. When providers leave the platform but their pages remain. The solution is to remove, redirect, or no-index these pages and reclaim the crawl budget.

Gregory Edwards recommends a specific framework for handling thin pages:

"Consider a no-index on those pages if they don't meet specific criteria, so say if they've left specific fields blank or it's not meeting a certain word count."

Duplicate content prevention

Duplicate content is especially problematic for marketplaces because the same inventory can appear across multiple pages. A provider might appear on a category page, a location page, a search results page, and a filter page, each time with identical or near-identical listing snippets.

Gregory Edwards identifies category overlap as the most common source:

"Ensure that your categories aren't overlapping. If you had a category for Samsung TVs and then you had a separate, discoverable, indexable page for Samsung TVs as well, they could cannibalize each other. Consider client-side canonicalizing or redirecting."

Practical duplicate content prevention strategies:

1. Canonical tags. Use rel=canonical to tell Google which version of a page is the primary one. Filter pages and search result pages should canonicalize back to the main category page.
2. Clear taxonomy boundaries. Every category and subcategory should have a distinct intent. If two categories target the same keywords, merge them.
3. Search page handling. Internal search result pages should not be indexable. Use noindex or block them via robots.txt.
4. Parameter management. URL parameters from filters, sorting, and pagination should not create new indexable pages unless there is significant search volume for those combinations.

Faceted navigation: the hidden opportunity

Gregory Edwards identifies faceted navigation as one of the most impactful technical SEO improvements for marketplaces, and also one of the most commonly mishandled:

"Assessing faceted navigation is something we found particularly impactful. If you had a trainer category on a marketplace like Amazon and then you filtered by green, a new page could appear and host those green trainers and you could target longer tail queries like 'green Nike trainers.'"

The challenge is that faceted navigation can scale in two problematic directions:

"It tends to go one of two ways. Either the facets are prevented from being indexed, so they're canonicalized back up to the category page and those pages aren't open to tapping into the organic opportunity. Or all of the pages are opened up and you get potentially hundreds or thousands of thin content pages on your site."

The solution is a rules-based approach. Not all facet combinations should be indexed. You need to determine which facet combinations have meaningful search volume and enough inventory to justify their own page.

Gregory Edwards shares a concrete result from implementing this approach:

"We've actually been able to drive an 87% click increase to faceted pages with one of our clients. Just from doing that work alone: looking at their facets, looking at the search volume for their facets and product-search-service combination pages, outlining some rules to alleviate the thin content, and then ensuring that the ones that we feel should be indexed are indexed."

A practical framework for faceted navigation decisions:

The process starts with keyword research: identify which facet combinations people actually search for, then open those up for indexing while keeping everything else canonicalized or no-indexed.

Internal linking

Gregory Edwards identifies internal linking as regularly overlooked by marketplaces:

"They don't necessarily consider how search engines and users will actually discover their pages. If you're working on the site day to day, you tend to have a very good knowledge of it. Whereas a brand new user landing on the site or a search engine landing on the site, you shouldn't just assume that they have that knowledge."

Mike Van der Haiden describes the correct approach using an inverted tree metaphor:

"Just as important as backlinks are to a website, internally linking your pages to other important pages is just as important and can be much more effective than building outbound links when you first start. Your most important page links out to the next level of most important category pages. Those category pages then link out to the next set of most important pages. So what you get is an upside-down tree structure."

Practical internal linking guidelines for marketplaces:

1. Homepage should link to all primary category pages.
2. Category pages should link to their location sub-pages and to related categories.
3. Location pages should link to individual listings and back to the parent category.
4. Listing pages should link to related listings, the parent category, and the parent location.
5. Blog content should link naturally to relevant category and listing pages (covered in the content strategy section below).
6. Consider the user journey. Gregory Edwards' test: "If a user is on a specific page, would they be able to access the other key areas of the site or key information they need to continue on their user journey?"

Core Web Vitals and page performance

Michael Caldwell notes that Google has become increasingly sophisticated in measuring page quality:

"Google Search Console is now providing a wealth of information on core web vitals. Page layout shift, for example, where they want the best user experience and they don't want a user to experience things shifting around. Some of this stuff is really technical."

Core Web Vitals measure three things:

• Largest Contentful Paint (LCP): how quickly the main content loads
• Interaction to Next Paint (INP): how responsive the page is to user interaction
• Cumulative Layout Shift (CLS): how much the page layout moves during loading

For marketplaces, common CWV issues include: images loading without dimensions causing layout shifts, heavy JavaScript bundles slowing interactivity, and slow server responses when pages query large databases of listings.

When and how to conduct a technical audit

Mike Van der Haiden uses a car service analogy:

"Having someone do an audit of your website doesn't necessarily mean that there's something wrong. It's just one of the vital signs that we have to look for to make sure that our marketplace is in a healthy condition."

For beginners, he recommends starting with free tools:

"If you're a beginner, Screaming Frog or SEM Rush will crawl your website and give you hints as to what needs to be fixed. Screaming Frog is a little bit more technical. SEM Rush is a little bit more intuitive. That would be a very good starting point for a beginner. The free tools will get you 70-80% of the way."

As the marketplace grows, the tasks get more complex:

"At that stage it makes sense to pull in some help from someone that's done this sort of thing before. You just want to understand that they know what the vital signs are that drive your marketplace and how you can improve those."

Mike Van der Haiden adds advice for working with SEO consultants:

"Ask the consultant to explain the steps that they go through, what they check for your website, and explain why they're checking for those things. Any SEO that really wants the best for their client will have no issues in explaining. And what tends to happen is once you've had someone do an audit once and really explain it to you, you now know this. You can keep this as a checklist to prepare against in the future."

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User-Generated Content Optimization

User-generated content is simultaneously the greatest SEO opportunity and the greatest SEO risk for marketplaces. When managed well, it creates a self-scaling content engine. When neglected, it drags down the entire domain's perceived quality.

The problem: providers do not write for SEO

Gregory Edwards describes the fundamental tension:

"It's unlikely that when users are signing up to your site, they have SEO in mind. Users want to get on the site, they want to list their product or service, and they want to begin generating sales. As a result, you could have hundreds, potentially thousands of low-quality profile pages or listing pages on your site, pulling down your overall perceived site quality."

Michael Caldwell sees the same pattern at PetWorks:

"Sometimes the pet pros, they're so excited to get their account created that they might write just one or two sentences for the listing description. And maybe they think they'll come back to it later. Maybe they think, 'Oh, I'll just eventually bring people to my own website, I don't really have to write very much.'"

Solution 1: Writing guides for providers

Gregory Edwards recommends providing explicit guidance:

"You can provide users with a writing guide, just outlining the things that they should include within their profiles or their listing pages. That in itself could help guide them into making a higher-quality page."

A provider writing guide for a marketplace should cover:

• Minimum description length. Set a clear expectation (e.g., at least 150 words).
• What to include. Services offered, experience, certifications, service area, pricing approach, availability.
• Keywords to use naturally. Help providers understand what potential customers search for.
• Photos and media. Requirements for images, portfolios, or videos.
• What to avoid. Excessive caps, keyword stuffing, placeholder text.

Solution 2: Listing strength meters

Michael Caldwell describes one of PetWorks' most effective UGC quality tools:

"We built a listing strength meter. As they're typing their listing description, once they reach certain thresholds of description length, it changes. They start out red and then as they type more, it's yellow, and then they want to get to green. We noticed after we implemented that feature, the average length of description started to grow."

This is a simple but powerful behavioral nudge. It works because it gives providers immediate visual feedback and taps into the natural desire to complete something fully. PetWorks currently measures description length, but Michael Caldwell notes plans to get more sophisticated:

"More work to be done on that certainly. We have plans to get a lot more sophisticated on that front. But that was just a simple example of leveraging user-generated content to help maximize SEO while also helping the users themselves."

Solution 3: Concierge listing improvement

Michael Caldwell takes a hands-on approach to improving provider listings:

"When they sign up with us, we reach out to them and we say, 'Look, thanks for joining. We were reviewing your listing as we do with all the pet pros, and we'd like to work with you to help improve your listing.' Sometimes they'll let us edit it and improve the listings on their behalf with their approval, and they think it's great. They feel like they're getting concierge-level service."

PetWorks runs daily reports to identify underperforming listings:

"We run reports every day where we look for those pet pro listings that have less than 150 characters, and we'll go in and we'll review those and we'll reach out to the pet pros."

This approach works because it positions listing improvement as a service to the provider, not as an SEO task. The provider benefits from a better listing that converts more customers. The marketplace benefits from higher-quality content.

Solution 4: Template-level improvements

Gregory Edwards recommends looking beyond user input to the listing page template itself:

"Something that you can do yourself is actually reviewing the listing page or the profile pages template and see if there's anything that you can improve on that specific page. Take a profile page: could you maybe pull through some reviews of the user to help source additional information?"

Template-level improvements that boost UGC quality without requiring provider action:

• Pull in reviews and ratings to add social proof content to listing pages.
• Add structured data markup (schema.org) for local businesses, services, products, reviews.
• Auto-generate contextual content based on category, location, and service type.
• Show related providers to create internal links and reduce bounce rates.
• Display FAQ sections generated from common category questions.

Solution 5: No-index thresholds

Not every listing page deserves to be indexed. Gregory Edwards recommends using quality thresholds:

"Consider a no-index on those pages if they don't meet specific criteria, so say if they've left specific fields blank or it's not meeting a certain word count."

A practical threshold system:

Solution 6: Provider-contributed blog content

Michael Caldwell uses provider expertise to fuel the marketplace blog:

"We have an articles section, a blog section of our site, and it's all articles that the pet pros that list with us contribute. They have a bio and they have author credit. We let them link back to their own website. So it's a big benefit for them. We share it out on our social media community."

This strategy creates multiple benefits simultaneously:

• Original expert content that builds topical authority.
• Provider engagement and loyalty to the platform.
• Natural backlinks when providers share their published articles.
• Internal linking opportunities from blog posts to category and listing pages.
• Social media content that the marketplace can share across channels.

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Keyword Research and Strategy

Keyword research for marketplaces is fundamentally different from keyword research for a blog or an ecommerce store. The scope is bigger, the keyword universe is more complex, and the relationship between keywords and page types requires more careful mapping.

Start small: the 10-keyword rule

Michael Caldwell's most important piece of keyword advice is about managing overwhelm:

"The key is to just pick 10 of your most important keywords and start with that. Don't get overwhelmed with the fact that you've got 500 that you want to optimize for. That's the challenge of a marketplace, but you got to start somewhere. Find a tool that you can use to monitor your ranking positions, but just start with a small subset and work on optimizing those."

He describes the long-term trajectory:

"A year from now or two years from now, you might be amazed that now you have a system in place where you're able to monitor 100 or 200 keywords because you started small and built out from there. And then you really have something quite amazing."

Learning the vocabulary of your marketplace

Michael Caldwell describes a discovery process that starts with listening rather than researching:

"Tools like Google Analytics and Google Search Console, as you're becoming more familiar with those tools, you have to see how people are finding your site. The search section of Google Analytics, where if your site has any kind of search capabilities, Google is smart enough to know that 'q=' is a search parameter. You start to see how people are finding my site and searching for keywords within the platform."

He shares a concrete example from PetWorks:

"We discovered that people are searching for 'puppy training' and 'dog training.' And we realized that we were just thinking 'pet' everything. To expand the vocabulary of our keywords: pet trainer versus training, dog trainer versus dog training. Making sure that we're incorporating these keywords in various places on category pages, encouraging providers to use a nice mix of these keywords in listing descriptions."

The process is iterative:

"Anytime you launch either a new marketplace or a new category within a marketplace, there's this learning curve where you're starting to become like a mini expert in that particular category. You're starting to learn the lingo, the language, the vocabulary of that category. And then you just got to make sure that your site is covering that."

Understanding search intent

Mike Van der Haiden identifies search intent as the single biggest mistake in marketplace keyword strategy:

"The biggest thing is probably searcher's intent. The mistake that's often made is 'I'm going to do some keyword research and I'm going to look at all the keywords that get the most search volume and that's what I'm going to zero in on.' But that doesn't necessarily mean that those keywords are actually providing the answer that your marketplace is providing."

He gives a concrete example:

"A perfect example is e-commerce marketplaces. People try and rank for terms like 'best 65-inch LED televisions.' When you type that in, it's a query because you want to understand what are the best TVs out there. You're expecting review content, someone to write an opinion piece. If you're then trying to rank your marketplace for that query with your 10 search results of TVs that you're selling, that intent is a disconnect."

The solution is to match page types to intent types:

Mike Van der Haiden describes how to handle the intent mismatch constructively:

"I'm trying to rank my commercial page for an informational query. How about I swap this around? I write a really good piece of informational content, rank that particular piece of content for that query, and then link from that informational piece to my commercial page as a call to action. You'd find that sometimes switching out and writing a piece of content will end up converting and producing more sales than trying to get higher rankings with a commercial page."

Keyword gap analysis and clustering

Gregory Edwards describes BlueArray's approach to systematic keyword research:

"What we do for our clients is a keyword gap analysis. We look at your site and then the keywords that you're ranking for, and then take competitor sites, specifically looking at keywords they're ranking relatively well for, in positions one to 20. We create an aggregate of where the gaps are and then we'll cluster that gap."

The clustering process reveals actionable patterns:

"You'll have a few areas immediately that you can see: we have a gap in X, here's the search volume attributed to that specific gap, and here's the number of keywords attributed to that. It gives you a general understanding and can help shape your general SEO strategy."

Mike Van der Haiden recommends a specific tool chain for this process:

"Take keywords from SEMrush, put them into Keyword Cupid, where they bundle them together, then load those into Surfer SEO and it's going to tell you how much content you need to write, how many headings, how many images, how many times you need to mention certain keywords, all based on the top 10 ranking results for that particular keyword."

Keyword mapping: matching clusters to pages

Gregory Edwards explains the mapping step:

"Keyword mapping is the process of mapping those keywords or clusters to specific areas of your site or the specific intents of them. So say if you were AutoTrader and you carried out a keyword analysis, you might have some clusters around car makes and models like BMW 1 Series, Audi A4. You can expect those to be supplemented by some sort of category or subcategory page. Whereas if you had a cluster for 'top tips for X,' you'd probably be best to target those with a piece of content."

Be realistic about keyword difficulty

Gregory Edwards emphasizes realism:

"Be realistic. Be realistic with the keywords you intend to target, especially if you're a newer site. It's unlikely that you're going to rank for a really competitive keyword or a competitor's branded term. You need to build that authority. One tool that we use internally is SEMrush and they have a really good keyword difficulty score out of 100 that tells you how difficult it is to rank for a specific keyword."

Mike Van der Haiden reinforces this with the competitive landscape argument:

"If you have a look at a marketplace trying to challenge an incumbent, the incumbent has already built that authority by just being there early or building trust with users. That's why they're able to rank even with commercial pages."

The demand-side focus

Michael Caldwell's approach to keyword strategy is firmly demand-side focused, but with an eye on supply-side effects:

"We have always focused our SEO efforts more on the demand side. But what's interesting is that it can indirectly help the supply side. The pet pros are watching. When they see your marketplace showing up on the first page of Google search results, they say to themselves, 'I can leverage their SEO strength by becoming part of their marketplace.'"

Mike Van der Haiden agrees:

"SEO isn't as effective for the supply side as it is for the demand side. Really, the supply side comes as you grow the demand side because people go, 'I need to be selling on Amazon because Amazon has got 100 million eyeballs.' In that scenario, the supply side will come because they consistently see that marketplace ranking for what their customers are looking for."

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Content Strategy That Ranks

Content strategy for marketplaces is not the same as content strategy for a blog. Marketplaces already have massive amounts of content through their listings and category pages. The challenge is creating additional editorial content that serves a strategic purpose: capturing informational search traffic, building topical authority, and passing link equity to commercial pages.

Quality over quantity

Gregory Edwards leads with this principle:

"Favor quality over quantity. Really focus on the quality of your content. If you're putting in the resource and effort to actually create a content strategy, make sure you're doing it the right way from the get go. We've already discussed low-quality content being an issue for marketplaces. We don't want additional low-quality content appearing on our blog or article section."

This is a critical point that marketplace founders sometimes miss: adding more content to an already content-heavy site can hurt if that content is thin. Every new page is either an asset or a liability.

SERP landscape review before writing

Gregory Edwards recommends researching the SERP before creating any content:

"Review the SERP landscape specifically for the keywords that you're trying to target. Understand: if you are to write an article for that particular topic, what are the top results doing in terms of format, subheadings? What are the actual keywords they're targeting? What type of content is appearing within search results? Is it being served by informational-style content? If it isn't, then it's unlikely that your piece of content will perform well."

This step prevents the intent mismatch that Mike Van der Haiden warned about. Before writing, check whether Google is already serving the query with informational content, product listings, local results, or something else entirely.

Evergreen vs seasonal content

Gregory Edwards emphasizes the importance of evergreen content:

"Ensure that your strategy contains numerous evergreen content pieces. What we mean by that is pieces that will continuously drive traffic to your site, as opposed to solely being seasonal pieces that will initially drive traffic or only drive traffic in certain months and then that traffic will fall off. That's not to say don't include seasonal pieces. They do possess some value. But definitely try to weave in some evergreen pieces into your content strategy."

For a marketplace, evergreen content might include:

• "How to choose a [service provider]" guides
• "What to expect when hiring a [provider type]" articles
• Pricing guides for different service categories
• Best practices for buyers and sellers
• Industry trend analysis

Seasonal content might include:

• "Best [category] for [season/holiday]" articles
• Event-tied guides ("wedding season planning")
• Trend roundups for a specific year

Content types that work for marketplaces

Gregory Edwards identifies three content formats that have performed particularly well:

1. "Best of" listicle content

"Previously we have seen 'best' style content do very well. So 'best' something, like 'best trainers for 2023.'"

However, he notes an important caveat about Google's product review updates:

"If these are tied to products, Google's product review update tends to favor sites that have first-hand experience of actually testing those products and that offer more rich content beyond what the manufacturer provides. So if you're looking to create this content, you need to make sure that you can actually demonstrate that you've got first-hand experience."

2. Ideas and inspiration content

"Another style article that's done quite well is ideas or inspiration. If you were selling electronics, you could create an article around '15 gift ideas for photographers,' which could be highly relevant to your audience if you're a marketplace for cameras."

This format works well for marketplaces because it naturally leads readers toward the marketplace's commercial pages.

3. How-to content with video

"If you really want to push the boat out and you have resources to create partnering videos, 'how-to' content tends to do quite well. Within the SERP landscape, there are a lot of rich results that feature videos, so being able to create that partnering video will help not only target your audience but also give you good visibility within the search results."

He recommends marking up video content with schema:

"Mark that up with video schema. It doesn't get too technical, but mark that up as well to help it appear in rich results."

Category pages: showing supply vs content approaches

Mike Van der Haiden identifies a fundamental strategic choice for category pages:

"You're going to have to ask yourself one question. Am I going to show my supply side, like an Airbnb? Or am I going to run a marketplace like Air Tasker, where we don't actually show who the suppliers are?"

The answer changes the content requirements dramatically:

"If you're showing all the inventory, less additional content is required because you can really pad out your provider listings with content that will help build the main content for that particular category page. If you're dealing with a marketplace where you don't want to show your supply side, really all you've got is content. You have to write a lot more supporting content because you don't want to show the supply side."

Answering every question in your category

Mike Van der Haiden recommends an exhaustive approach to informational content:

"What I'm going to understand is every single question that's been asked about my particular service or product. I'm going to write content and I'm going to answer every single question that's out there. What you're essentially doing from day one is you want to show the search engines and users that you're an expert on this particular topic."

He contrasts this with the old directory approach:

"You're not going to show that expertise by just showing 10 TVs or 10 service-based businesses in a particular area. Google is not going to understand that you are an actual expert in that topic. The old-school directory style businesses have had to adapt because previously it was enough to just show 10 butchers in New York. But now there are marketplaces that are specific around butchers, creating content about what's the best cut of steak, what are the best meats."

Using content to pass link equity

Gregory Edwards highlights an often-overlooked strategic function of content: passing link equity to commercial pages:

"We'd emphasize the linking value of those content pages. Your actual articles or content are far more likely to be linked to than any other area of your site. So we'd look to use them to naturally link through to our products or services or listing pages or categories. That's a natural way of boosting their link equity, helping make them more competitive in search results."

He stresses the word "naturally":

"Stressing on naturally and not just completely bombarding your piece of content with links."

The strategy is: create excellent informational content that earns external backlinks, then use internal links from that content to flow authority to your commercial category and listing pages.

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Programmatic SEO for Marketplaces

Programmatic SEO is the practice of generating large numbers of search-optimized pages automatically from structured data. For marketplaces, this is not an advanced tactic. It is what you are already doing, whether you realize it or not. Every category page, location page, and listing page on your marketplace is a programmatically generated page.

The question is not whether to do programmatic SEO. It is whether to do it well or let it happen by accident.

What programmatic SEO means for marketplaces

Traditional SEO creates pages one at a time: a writer researches a topic, writes an article, and publishes it. Programmatic SEO creates pages from templates and data: a category template combined with location data generates hundreds of pages like "dog trainers in Houston," "dog trainers in Austin," "dog trainers in Dallas."

Marketplaces are natural candidates for programmatic SEO because they have structured data (categories, locations, providers, services, prices) and repeating page patterns. The same template renders differently depending on which category, location, or filter combination the user selects.

The marketplaces that have used programmatic SEO most effectively, Zillow, Thumbtack, Yelp, Eventbrite, are all two-sided platforms that generated thousands of location-specific or category-specific pages from their inventory data.

The three rules of marketplace programmatic SEO

Based on the expert insights throughout this guide, three rules emerge for doing programmatic SEO well:

Rule 1: Every generated page must have enough unique content to justify its existence.

This is Michael Caldwell's threshold principle in action. Do not generate a page for "pet trainers in Boise" if you have zero providers in Boise. Do not create a faceted page for "green Nike trainers size 12" if you have two products matching that combination.

Rule 2: The template must produce meaningfully different content for each page.

If every location page shows the same three listings with only the city name changed in the H1, Google will see those pages as near-duplicates. The content must vary: different providers, different reviews, different pricing data, different contextual information. Gregory Edwards' warning about thin content applies directly: "pages that have been created and then forgotten about" are the result of programmatic generation without programmatic quality control.

Rule 3: Generated pages must fit into the site hierarchy and internal linking structure.

Orphaned programmatic pages that are not linked from anywhere will not be crawled or indexed. Every generated page needs a path from the homepage through the category hierarchy to be discoverable.

Programmatic page types for marketplaces

The quality control layer

The difference between programmatic SEO that works and programmatic SEO that gets penalized is quality control. For every programmatic page type, you need automated checks:

• Minimum inventory threshold. How many providers or products must exist before the page is created?
• Content uniqueness score. How different is this page from other pages in the same template?
• User engagement signals. Are people clicking on this page from search results? Are they bouncing immediately?
• Index status monitoring. Is Google actually indexing these pages, or are they being ignored?

Gregory Edwards' approach of splitting XML sitemaps by section becomes essential here. If you generate 5,000 location pages, you need to know how many Google is actually indexing and whether that number is growing or shrinking.

When not to use programmatic SEO

Programmatic SEO is not appropriate when:

• You do not have enough supply to fill the generated pages with meaningful content.
• The search demand for the generated page pattern does not exist (no one searches for your category in that format).
• The generated pages would cannibalize each other or compete with your existing category pages.
• You cannot implement quality thresholds to prevent thin pages from being indexed.

Mike Van der Haiden's advice about understanding search demand before building applies directly: "Understand whether or not search volume already exists or whether you actually need to start creating educational pieces around what your services are." If nobody searches for your category in a location-specific way, generating location pages is wasted effort.

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Link Building for Marketplaces

Link building is where marketplaces have a structural advantage over almost every other type of website. While most businesses have to manufacture reasons for other sites to link to them, marketplaces have built-in relationships with hundreds or thousands of suppliers, each of whom has their own web presence.

Why links still matter

Mike Van der Haiden explains the fundamental mechanics:

"Google takes into account links. It's a fundamental thing of SEO that Google looks at what other websites are linking to your website as a sort of a voting system. And the more high-quality and relevant websites that link to you, the better it is for your SEO."

He introduces the concept of domain authority:

"You can take three separate domains: a brand new domain, a domain rating 20 small website, and a very large news outlet. You could produce three similar pieces of content and the news outlet tends to rank higher. Why? Because the one that has the higher rating has actually got a lot more trust from the search engines."

Mike is careful to note that links are not the only ranking factor:

"It's not that you won't rank without links. If you're producing great content, you can rank without building links. But having link building in your tactical arsenal will make ranking a little bit easier."

Strategy 1: Provider badge programs

Michael Caldwell describes the provider badge approach that has worked for both Gigmasters and PetWorks:

"We provide them with a snippet of HTML and a PetWorks approved badge that they can place on their website. And that links back to their PetWorks listing. It's a very nice-looking badge that looks great on their own website. Even if a small percentage of those 5,000 pet care providers provide a link back to us from their website, it really helps in a really organic way build your links."

This works because it creates genuine value for the provider: the badge acts as a trust signal on their own site while creating a natural backlink to the marketplace.

Strategy 2: Provider-contributed articles

Michael Caldwell uses provider expertise to create linkable content:

"The pet pros contribute articles. They have a bio and author credit. We let them link back to their own website. We share it out on our social media. And then that particular pet pro, they might want to share it also. And so then you start to build links back to this content."

He frames this as a win-win:

"The pet pro is gaining visibility. They get to share their expertise, their point of view. Maybe it drives some traffic back to their main website. But then it's also helpful for us in building up those number of backlinks."

Strategy 3: Founder PR and visibility

Mike Van der Haiden identifies founder-driven PR as one of the most effective link building tactics:

"The two most effective ones that we've come across are: a founder that's really outgoing and jumps on every opportunity to get interviewed, podcast, guest posts. What you get is looking at link building as a PR exercise, because the founder is talking to someone."

He reframes link building entirely:

"Link building has gotten a really bad rep because everyone probably gets a thousand emails a day about how they can help your website rank. But really what I try to understand is when you really boil it down, it's nothing more than getting exposure for your brand."

His daily practice is modest but consistent:

"If I can reach out to five websites a day, would I want my website associated with that? Would I want to get my website seen or linked to from this particular website? If I do, pitch your business in the light of giving the webmaster a reason to link back to you."

Strategy 4: HARO and journalist relationships

Both Mike Van der Haiden and Gregory Edwards recommend HARO (Help A Reporter Out) as a reactive link-building strategy.

Mike Van der Haiden:

"HARO is a service where all the journalists from big publications to small publications put a request and say, 'We're writing a story about the best nail salons in New York.' If you come across that and you specialize in that, you can respond to the journalist and give them a quote. They'll typically link to the business that's given them the quote."

He emphasizes the relationship-building aspect:

"It's almost a strategy for you to connect directly with journalists in your industry. One relationship, many articles. Find a way to woo the journalist in your market and create a relationship with them and be their source."

Gregory Edwards adds the proactive side:

"Utilizing digital PR: are there any key insights or pieces of data that you can pull together from your site and then push it out to news publishers, try and get features within those? Not necessarily content, but videos as well, or just creating a useful tool like a calculator. Even carrying out an interview or featuring on a podcast can open links."

Strategy 5: Statistics and data content

Mike Van der Haiden highlights a high-leverage approach used by companies like HubSpot:

"If you have a look at HubSpot and you look at their most linked-to pages, out of the top 10, nine are statistics. 'The 10 statistics every email marketer should know,' 'The 50 statistics every Facebook marketer should know.' Why? Because journalists love to reference statistics."

For marketplaces, this means leveraging the data you already have:

"If you've done a survey, compiled information, say 'Hey, we've actually done a study on this particular topic, why don't you use that in one of your content pieces and just reference our website or study as your source.'"

Marketplaces sit on valuable transaction, pricing, and behavioral data that can be packaged into statistics pages, industry reports, and trend analyses that journalists and bloggers naturally want to cite.

What to avoid

All three experts are unanimous on what not to do.

Michael Caldwell is direct:

"Don't buy links. As tempting as it might be, we don't do that. And we're also mindful of non-reputable sites that are linking to us. Google has a whole process where you can disavow links from sites of poor reputation because that will actually hurt you."

He also emphasizes there are no shortcuts:

"There's no quick overnight way to buy your way into link building. This is a process that takes time. You start at zero and then you get one and you should celebrate that. Then you have 10 backlinks and you should celebrate that. Down the road, maybe a couple years later, you'll have 5,000 backlinks and somebody will ask you how you did it and you'll say, 'Oh, yeah, it was easy.' But you just realized that you spent a lot of time building that."

Gregory Edwards lists the specific tactics to avoid:

"Google specified within their guidelines that any kind of link scheme should be avoided and it can result in a manual action or penalty. Some of those strategies include buying links, private blogging networks, exchanging goods or services for a link, link exchanges, carrying out really excessive guest posting campaigns, and using exact match anchor text at scale."

Mike Van der Haiden warns about link-buying services:

"No one has access to 10,000 websites to give you a link without there being an unnatural way of doing so. Those websites are typically set up to just be pumped full of articles to link out to other businesses. They do really well for a year and then they get penalized. So you're spending your hard-earned money on links that might only last a year or two."

He contrasts this with the relationship approach:

"If you put a little bit more effort into the start and created a relationship with a journalist, they're going to be writing about your topic for the next few years. One relationship, many articles. Whereas otherwise, many articles, no relationship, so you're just consistently shelling out money."

The honest timeline

Michael Caldwell sets realistic expectations:

"When we launched PetWorks, we had no backlinks and I thought to myself, 'With Gigmasters over so many years we built up this amazing amount of backlinks. And now with PetWorks, I'm starting at zero again.' Is there anyway I can just skip and speed it up and press a button and suddenly have backlinks? No. The answer is no. There's no way."

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AI Overviews and the Changing SERP

The search landscape has changed significantly since the foundational principles in this guide were first articulated. Google's AI Overviews (formerly Search Generative Experience) now appear for a growing percentage of queries, providing AI-generated summaries at the top of search results. This changes the tactical landscape for marketplace SEO while leaving the strategic principles intact.

What AI Overviews mean for marketplace queries

AI Overviews tend to appear most prominently for informational queries ("what is the best cut of steak," "how to choose a dog trainer") and less prominently for commercial and transactional queries where Google wants to show product listings, local results, or marketplace inventory.

This actually favors marketplace category pages over pure informational content. When someone searches "dog trainers in Houston," Google is more likely to show your marketplace's listing page with real provider data than to generate an AI summary. The structured, transactional nature of marketplace pages makes them harder for AI to replace.

However, AI Overviews do compress the visibility of informational blog content. The "answer every question in your category" strategy that Mike Van der Haiden advocates still works, but the click-through rates on those informational pages may decline as Google surfaces answers directly in AI Overviews.

What this means for your strategy

The durable principles

The three experts quoted throughout this guide shared their insights before AI Overviews existed, but their core advice remains remarkably durable:

• Understand your customer and their search behavior. This does not change because of AI.
• Build clean site structure and manage crawl budget. AI Overviews make this more important, not less, because you need Google to understand your pages clearly enough to feature them in any SERP format.
• Create content that demonstrates genuine expertise. Google's AI needs sources. Being the authoritative source in your category means AI Overviews may cite you even if they reduce direct clicks.
• Build links through real relationships. Authority signals become more important in an AI-curated SERP because Google needs to trust the sources it cites.

The biggest risk is not AI Overviews replacing marketplace pages. It is marketplace founders overreacting to AI hype and underinvesting in SEO fundamentals that still work. The smartest response is to double down on the structural advantages marketplaces have: real inventory data, provider communities, transaction signals, and deep category expertise that AI cannot generate from nothing.

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The Marketplace SEO Toolkit

The experts consistently recommend a small set of tools. You do not need all of them, but you need at least the free ones from day one.

Essential (free)

Google Search Console

Michael Caldwell calls it the most important tool:

"Google Search Console, day one, get that set up, get your site verified. After a couple of days, Google Search Console is going to be providing you a wealth of information."

What to use it for:

• Index coverage: how many pages are indexed vs discovered
• Performance: which queries drive clicks and impressions
• Core Web Vitals: page experience metrics
• URL inspection: test how Google sees specific pages
• Sitemap management: submit and monitor your sitemaps

Google Analytics

Michael Caldwell highlights the internal search data:

"The search section of Google Analytics, if your site has search capabilities, you start to see what people are searching for within the platform. You start to learn the vocabulary of your marketplace."

Professional (paid)

SEMrush

Michael Caldwell's primary paid tool:

"I really love that platform because it provides you with actionable recommendations. You can schedule regular audits and it will email you and say 'We've got a recommendation for you.' A lot of times, it's like, 'Oh yeah, that is a great idea. I didn't think of that.'"

Gregory Edwards uses SEMrush's keyword difficulty score as a guideline for realistic keyword targeting. Mike Van der Haiden uses it for keyword gap analysis and competitor research.

Caldwell acknowledges the cost reality for startups:

"It is expensive. Even with PetWorks, there are times where I have to pause it because our expenses are too high. But I would say it's one of the most important tools."

Screaming Frog

Mike Van der Haiden recommends it for technical audits:

"Screaming Frog will crawl your website and give you hints as to what needs to be fixed. It's a little bit more technical than SEMrush."

Keyword Cupid

Mike Van der Haiden's recommendation for keyword clustering:

"A tool that can take a list of a thousand keywords and through NLP and machine learning, match terms together that should be clustered on the same page. It will say, 'Of a thousand keywords, we recommend segmenting them into these hundred pages or these 500 pages.'"

Surfer SEO

Mike Van der Haiden's recommendation for content optimization:

"Put that keyword into Surfer and it's going to tell you how much content you need to write, how many headings, how many images, how many times you need to mention certain keywords, all based on the top 10 ranking results for that particular keyword."

The practical tool chain

For a marketplace founder starting from scratch, the recommended progression:

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The Operator Checklist

This section condenses the entire guide into an execution sequence by marketplace stage. Use it as a reference to know what to prioritize now and what to defer.

Pre-launch and early build

Site structure and technical foundation:

• Sketch your site hierarchy on paper before building. Homepage → categories → (locations) → listings.
• Define your URL structure conventions. Make them clean, consistent, and scalable.
• Set up Google Search Console and verify your domain on day one.
• Set up Google Analytics with site search tracking enabled.
• Create separate XML sitemaps for each section of your site.
• Implement basic schema markup (LocalBusiness, Product, or Service depending on your category).
• Set up 301 redirects for any URL changes from the start.

Content quality controls:

• Build programmatic threshold logic so pages are only created when supply density justifies them.
• Set minimum quality thresholds for listing pages (word count, required fields, images).
• Create a provider writing guide with clear expectations for listing content.
• No-index pages that fall below quality thresholds.

Growth stage: first 6-12 months of active SEO

Keyword research:

• Start with 10-20 core keywords for your most important categories.
• Use Google Search Console and internal search data to learn your marketplace's vocabulary.
• Identify keyword variants and synonyms that your audience actually uses.
• Map keywords to page types: commercial keywords to category pages, informational keywords to blog content.
• Conduct a keyword gap analysis against your top 2-3 competitors.

Category page optimization:

• Ensure every category page has a unique title, H1, meta description, and descriptive content.
• Add contextual content to category pages beyond just listing inventory.
• Implement proper internal linking between related categories.
• Assess faceted navigation: identify which filter combinations have search volume and should be indexed.

UGC improvement:

• Build a listing strength meter or similar quality nudge.
• Set up daily reports to identify low-quality listings and reach out to providers.
• Review listing page templates for template-level improvements (reviews, related listings, structured data).
• Launch a provider-contributed content program (blog articles, guides, tips).

Content creation:

• Create 2-4 high-quality evergreen articles per month targeting informational keywords.
• Review the SERP landscape before writing each piece.
• Include natural internal links from content pages to commercial pages.
• Experiment with different content formats (listicles, guides, how-to, ideas/inspiration).

Scale stage: 12+ months

Technical optimization:

• Monitor index coverage ratio monthly. Investigate if the gap between discovered and indexed pages is growing.
• Run quarterly technical audits using Screaming Frog or SEMrush.
• Optimize Core Web Vitals (LCP, INP, CLS).
• Clean up expired listings, inactive providers, and dead pages.
• Assess crawl budget allocation: is Google spending time on your most valuable pages?

Link building:

• Launch a provider badge program.
• Encourage provider-contributed articles with author credit and backlinks.
• Pursue founder PR: podcasts, interviews, guest posts.
• Set up HARO or similar journalist-connection services.
• Create statistics and data content from your marketplace data.
• Monitor and disavow toxic backlinks.

Expansion:

• Roll out location pages as supply density grows (use the threshold system).
• Add subcategories when search volume and inventory justify it.
• Translate keyword research into new languages and markets if expanding internationally.
• Consider video content with schema markup for high-opportunity queries.

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What Often Gets Missed

The ideas below are easy to underrate because they are not standalone SEO techniques. They matter because they shape whether marketplace SEO compounds over time or stays stuck in manual mode.

SEO as a product feature, not a marketing task. Michael Caldwell built SEO controls into the admin panel at PetWorks so his non-technical co-founder could adjust page titles, H1 tags, and meta descriptions by category without code changes. Gregory Edwards recommends building quality thresholds into listing page templates. These are product decisions, not marketing decisions. The most effective marketplace SEO happens when the product itself is designed to produce good SEO outcomes.

The admin panel as an SEO tool. Michael Caldwell: "I wanted it to be able to be done in the admin screen so my non-technical co-founder could go in there and test things out without having to make code changes." Most marketplace platforms do not offer this out of the box. If yours does not, building it is one of the highest-leverage SEO investments.

Internal search data as keyword research. Michael Caldwell uses internal search queries to discover vocabulary gaps: "puppy training" vs "dog training" vs "pet training." This data is free, specific to your marketplace, and reveals exactly how your users think about your categories. Most marketplaces ignore it.

Provider SEO education as an acquisition tool. When providers understand that your marketplace helps them rank in Google, they become more willing to invest time in their listings, contribute content, and stay on the platform. SEO capability becomes a retention and monetization tool, not just a traffic tool. Michael Caldwell: "When they start to see that by listing on PetWorks they're getting greater visibility in search, now they have a higher willingness to pay."

Two SEO people, not one. Michael Caldwell: "You almost need one person that focuses on technical SEO and another person that focuses on keyword research and link building. It's unrealistic to think one SEO person can handle all aspects for a whole marketplace." For early-stage marketplaces, this can be two co-founders splitting responsibilities rather than two full-time hires.

Writing natural copy with an SEO mindset, not SEO copy. Michael Caldwell: "I think the biggest lesson is don't just put words on a page solely for SEO. It has to really make sense for the user as they're reading your page. Otherwise, you're going to lose them." The distinction between "SEO copy" and "natural copy with an SEO mindset" is subtle but important. The former optimizes for algorithms. The latter optimizes for users while being aware of algorithms.

Schema markup for marketplace entities. Marketplace listings, providers, services, reviews, and events can all be marked up with structured data (schema.org). This does not directly improve rankings, but it increases the likelihood of rich results (star ratings, pricing, availability) appearing in search results, which significantly improves click-through rates. Gregory Edwards recommends video schema specifically, but the principle extends to LocalBusiness, Service, Product, Review, and FAQ schema types.

Disavowing toxic backlinks. This is purely defensive but important at scale. Michael Caldwell: "Google has a whole process where you can disavow links from sites of poor reputation because that will actually hurt you." SEMrush and similar tools can flag these automatically, but you need to actually submit the disavow file through Google Search Console.

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What I Would Build First

If I were building a new marketplace and wanted to get SEO right from the start, I would not try to implement everything in this guide simultaneously.

I would build a narrow but complete system:

1. Sketch the site hierarchy on paper first. Homepage → categories → (locations, if location-based) → listings. Decide whether category or location comes first in your hierarchy based on how your audience searches. Do not build location pages until you have supply to fill them.

2. Set URL conventions before writing any code. Clean, consistent, scalable URL patterns that will not need to change as you grow. This is the single hardest thing to change later.

3. Set up Google Search Console on day one. Before you have any traffic. Before you have any content. The sooner Google starts indexing your site, the sooner you have data to work with.

4. Build quality thresholds into the listing template. A listing strength meter, minimum word count requirements, no-index rules for incomplete listings. These product decisions prevent thin content from accumulating, which is the number one technical SEO problem for marketplaces.

5. Pick 10 keywords and start there. Do not try to optimize for 500 keywords on day one. Pick the 10 most important category and location keywords, optimize your most important pages for them, and monitor your ranking positions weekly.

6. Create a provider writing guide. One page that tells providers what to include in their listing, how long it should be, and what keywords to use naturally. This is a one-time investment that improves every listing created from that point forward.

7. Write one excellent informational article per month. Not ten thin articles. One deeply researched, genuinely useful piece that answers a real question in your category. Link naturally from it to your category pages. This builds topical authority and creates internal link equity.

8. Only then add the compounding layers: provider badge programs, contributed articles, HARO, founder PR, faceted navigation optimization, programmatic page expansion, and more sophisticated keyword clustering.

The lesson is the same one Michael Caldwell learned across two decades of marketplace building: start small, build the foundation correctly, and compound over time.

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The Shortest Honest Conclusion

After all the detail, the core operating idea is still simple.

Marketplace SEO is its own discipline. It is not something you can outsource to a generalist agency or handle at arm's length. The combination of dynamic content, user-generated pages, category-location matrices, and two-sided business dynamics makes it fundamentally different from blog SEO, ecommerce SEO, or corporate website SEO.

The strongest marketplace SEO systems are built on four layers working together:

1. Technical foundation: clean site structure, managed crawl budget, quality thresholds, proper indexation controls.
2. Content engine: user-generated listing content improved through nudges and outreach, supplemented by editorial content that builds topical authority.
3. Keyword intelligence: realistic targeting based on actual search behavior and intent, not vanity volume metrics.
4. Link ecosystem: community-driven link building through provider relationships, contributed content, PR, and data journalism.

Michael Caldwell's final advice captures the mindset:

"Building a marketplace, it's not a sprint, it's a marathon. Just be prepared for a long and hopefully rewarding journey. It's not going to happen overnight, but just stick with it, and you'll be amazed with what you can accomplish over time."

Gregory Edwards encourages founders who are just starting:

"You will not know everything and that might seem like a bad thing or quite daunting, but the industry is constantly evolving and there's a wide scope of areas that can be looked at in more and more detail. If you are eager to learn and genuinely interested in the world of SEO, you will flourish."

And Mike Van der Haiden closes with the principle that underlies everything else:

"Understand your customer, understand their needs, and the rest will flow from there."

That is the shortest honest version of marketplace SEO. Start with your customer. Build a clean structure. Create content worth ranking. Earn links through relationships. And give it time.