Why links are different in gambling
Links from other sites remain one of the strongest signals of a page's authority, and in most industries they are earned by being useful. In gambling they are also bought, at scale, through a market that is older, larger and more organised than in any other category, because the rankings are worth more and because the sites that would link naturally, newspapers, universities, public bodies, mostly will not link to a casino at all.
That market is the subject of this lesson: how it works, what it costs, why the search engines treat gambling links with particular suspicion, and what a business that wants to survive its next update should do instead. The lesson does not pretend the market does not exist or that nobody in the industry uses it. It explains the risk so the decision is an informed one.
How links are acquired
Paid placements. A payment to a site owner for an article containing a link, typically on a site with real traffic and topical relevance, priced from tens to thousands of pounds depending on the site's authority. Gambling is charged a premium, often several times the rate for other sectors, because the site owner is taking a risk. The article may be labelled sponsored (which, if the link is marked accordingly, passes no authority and is legitimate advertising) or not (which is a link scheme in the search engine's terms).
Private networks. Groups of sites built or bought for the purpose of linking, controlled by one owner, disguised as independent. Expired domains with historical authority are a common raw material: a defunct local newspaper or charity site is bought, restored and pointed at a casino. Search engines identify networks by ownership, hosting, link patterns and content, and when they do, every site the network links to can lose its rankings at once.
Link exchanges and affiliates. Reciprocal linking between gambling sites, and affiliate sites linking to operators as part of the commercial relationship. The latter is legitimate; the affiliate is being paid for customers, not links, and the link should be marked as sponsored. Many are not, which is a risk the operator shares.
Hacked and injected links. Links placed on compromised sites without the owner's knowledge. Illegal, common in gambling, and a signal that a site's link profile has been bought from the wrong vendor.
Earned links. Citations from publishers, regulators, trade bodies, forums, other businesses and, occasionally, mainstream media, given because the page was worth referencing. Rare, slow and the only kind that cannot be taken away.
What the search engine does about it
Google's spam policies name link schemes explicitly, and its systems for detecting them have improved in steps that the gambling sector has felt each time. Two mechanisms apply. Algorithmic systems discount links they judge to be manipulative, so a purchased link may simply count for nothing, which means the money was wasted. Manual actions, applied by a human reviewer, remove a site's rankings until the links are cleaned up and a reconsideration request is accepted, which can take months.
Since 2024 the search engine has also acted against "site reputation abuse": third-party content placed on an authoritative site to borrow its ranking power, which is the mechanism behind a great deal of gambling content on newspaper and magazine domains. Publishers that hosted casino guides in exchange for a fee have had those sections removed from search results, and the gambling sites that relied on them lost the traffic overnight.
The practical consequence is that a link profile built by purchase is a liability with an unknown maturity date. It may work for years. It is also the reason an affiliate business with excellent rankings can be worth nothing the morning after an update, and buyers of such businesses now audit the link profile before anything else.
The economics, honestly
A gambling site that ranks for a generic term through purchased links can earn far more than the links cost, for as long as the ranking lasts. The expected value of the strategy depends on how long that is, and nobody knows. The sites that have done well from it have treated the revenue as temporary and reinvested in assets that do not depend on it; the ones that have done badly treated it as permanent and were destroyed by a single update.
For a licensed operator the calculation is different, because the downside includes a regulator's view of a brand caught buying placements on sites that also promote unlicensed operators, and because a manual action on an operator's brand terms is an existential problem rather than a traffic dip. Most licensed operators have concluded the risk is not worth it, and their organic strategies are correspondingly slower.
What earns links in gambling
The sites that would not link to a casino will link to information. The assets that have earned links in this sector share a pattern: they are the best available source for something people need to cite.
Data. Market size, tax receipts, withdrawal times measured across operators, odds margins by book, complaint statistics, the count of licences in a jurisdiction. Assembled, maintained and published with the method, these get cited by journalists, analysts and regulators.
Reference. The definitive explanation of a jurisdiction's rules, a game's mechanics or a regulatory process. Linked by anyone writing about the subject.
Reporting. News that other outlets follow, with the original credited. The reason publishers accumulate authority and operators do not.
Tools. Odds converters, bet calculators, RTP databases, licence lookups. Linked from forums and guides for years.
Responsible gambling and research. Operators that publish serious harm-reduction work, fund research or release anonymised behavioural data get links from the academic and public-health sources that will never link to a bonus page.
Digital PR, the practice of creating stories and data for journalists, works in gambling when the story is genuinely about something other than the brand. The industry's public relations teams are good at this and its SEO teams often do not talk to them.
Internal links
The link most gambling sites neglect is the one they control. Internal linking tells the search engine which pages matter and passes authority from the pages that have it (the homepage, the news section, the reference pages) to the pages that need it (the product and comparison pages). A game page linked from nothing but a lobby grid has almost no authority; the same page linked from three articles, a category hub and a supplier page has some. The Sports Integrity course's reference pages on this site are linked from every article that touches the subject for exactly this reason.
Cleaning up
A site that has inherited a bad link profile, through acquisition or history, has two tools: outreach to have links removed, which rarely works, and the disavow file, which tells the search engine to ignore specified links. Disavowing is appropriate for a manual action and for clearly toxic links; used broadly it removes links that were helping. The audit that precedes it, classifying every linking domain by how it was acquired, is the work, and it is the same audit a buyer performs before purchasing a gambling site.
What to take from this lesson
Gambling links are bought more than anywhere else because the rankings are worth more and natural links are scarce. Purchased links are discounted, penalised or removed in updates whose timing nobody controls, and the sites destroyed by them treated temporary revenue as permanent. Data, reference, reporting, tools and responsible gambling work earn the links that last; internal links are the ones a site can fix this week. Audit the profile before buying a gambling site, and before a regulator asks.