Casino and iGaming Link Building: What Works and What's Allowed
Casino and iGaming link building explained: which publishers accept gambling links, how advertising rules differ by market, and the link risks to avoid.
Casino and iGaming link building is the process of earning or placing links for gambling operators and affiliate sites: online casinos, sportsbooks, poker rooms, bingo sites and the comparison and review sites that refer players to them.
It's one of the hardest verticals in SEO. The SERPs are dominated by well-funded affiliates, the keywords are worth a lot, and a large share of mainstream publishers won't publish gambling content or link to gambling sites at any price.
That combination has created a parallel economy of "casino-friendly" sites selling links, many of which exist only for that purpose. Knowing how to tell them apart from real publishers is most of the job.
Why gambling link building is different
| Factor | What it means |
|---|---|
| Publisher acceptance | Many publishers, brands and agencies refuse gambling content outright |
| Regulation | Gambling advertising is regulated market by market, and affiliates are usually caught by the same rules as operators |
| Link prices | Fewer willing publishers means placements tend to cost more than equivalent non-gambling ones |
| Competition | Affiliates with large, aggressive link profiles dominate many SERPs |
| Spam pressure | Many sites selling casino links have little real traffic |
| Google risk | Link spam and site reputation abuse policies are particularly relevant to the vertical |
Which publishers accept gambling links?
Acceptance varies by publisher type and by market. The pattern below is a general one, not survey data, and individual publishers differ.
The publishers worth working with are the ones whose readers are adults with a genuine interest in sport, games or betting, in a market where the operator is licensed. A sports site serving a regulated market is a far better placement than a "general" blog that will publish a casino article next to a recipe.
Advertising rules by market
Gambling advertising is regulated market by market, and content marketing with links is generally treated as advertising. The details below cover the principles. Specific rules change, so check the current guidance for every market you target.
| Market | Who regulates | What it means for links and content |
|---|---|---|
| Great Britain | Gambling Commission (licensing), with ads enforced by the ASA under the CAP Code | The ASA has said that the vast majority of gambling "content marketing" is advertising and falls under the CAP Code. Operators are expected to make sure their affiliates' marketing complies |
| United States | State by state, through each state's gaming regulator | Only promote in states where the product is legal and licensed. Rules differ between states |
| Other regulated markets | National or regional regulators (for example in Malta and Ontario) | Each has its own advertising and affiliate rules |
| Unregulated or prohibited markets | Varies | Promoting gambling into a market where it's illegal is a legal problem, not just an SEO one |
In Britain, that means a guest post promoting a casino is subject to the gambling section of the CAP Code, which includes rules about social responsibility and who marketing may be aimed at, including under-18s. The ASA's 2022 remit statement on content marketing made clear that blogs and articles are not a loophole.
Google's policies and the gambling vertical
Two of Google's spam policies matter more in gambling than almost anywhere else.
- Link spam. Buying links that pass ranking credit, excessive link exchanges and low-quality links are all named. Paid placements should carry
rel="sponsored"or nofollow. The link schemes guide covers the full list, and sponsored posts explains how to label paid content properly. - Site reputation abuse. Google's policy targets third-party content published on an established site mainly to exploit that site's ranking signals. Its own example is a medical site hosting a low-quality, third-party "best casinos" page. Renting a section of an unrelated authority site to rank casino reviews is exactly what this policy describes.
Google's SpamBrain system also neutralises a great deal of link spam, so a lot of cheap casino links simply do nothing.
How to vet a gambling-friendly publisher
| Check | Good sign | Bad sign |
|---|---|---|
| Organic traffic | Steady, from searches related to the site's topic | None, or a sudden spike and collapse |
| Topic focus | Sport, gaming or betting coverage for adults | Everything from casinos to CBD to home loans |
| Market | Readers in markets where the operator is licensed | Global, unclear or prohibited markets |
| Outbound links | A few relevant links per article | Dozens of casino links across the site |
| Content quality | Written by people who know the subject | Spun or AI-generated filler around the link |
| Labelling | Sponsored content marked as such | "We'll make it look natural" |
The broader buying backlinks guide covers more of these checks, and a regular backlink audit is close to essential in a vertical where spam links arrive whether you buy them or not.
Link sources that work in iGaming
- Gambling news and industry sites covering regulation, launches and data, for B2B and brand stories
- Sports media for sportsbooks, through data, previews and expert analysis rather than odds-stuffed articles
- Original research on topics such as game return rates or betting trends, pitched as digital PR to sport and gaming media
- Responsible gambling content, which some mainstream publishers will link to when they wouldn't link to a promotion
- Industry events, awards and partnerships with official pages that link to participants
The short version
- Many publishers refuse gambling links, which pushes prices up and spam levels with them
- Gambling advertising is regulated by market, and in Britain the ASA treats most gambling content marketing as advertising under the CAP Code
- Only target publishers whose audience is adult and in markets where the product is licensed
- Label paid placements, and avoid renting sections of unrelated sites, which Google's site reputation abuse policy targets
- Vet every "casino-friendly" site on traffic, focus and outbound links, not on its domain metrics
In iGaming, the links that last are the ones a regulator and a search engine would both be comfortable seeing.