Why links are different in gambling
Links from other sites remain one of the signals Google uses to judge which pages matter: its link analysis systems, including PageRank, are still part of its core ranking systems. In most industries links are earned by being useful. In gambling they are also bought, at scale, through a market that is long established and highly organised, 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 according to the site's authority and traffic. Sites that accept gambling content may charge more for it than for other sectors, and many refuse it, because the site owner is taking a risk. The link may be qualified as paid (Google asks for rel="sponsored" on advertisements and paid placements, which it treats as a hint not to count the link for ranking, and a qualified paid link is legitimate advertising) or not (which is link spam in Google's terms: buying or selling links that pass ranking credit).
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. Google added an expired domain abuse policy in March 2024, and its spam policies give casino-related content on a former elementary school site as an example. Google does not publish how it detects networks, but its SpamBrain system can detect both sites buying links and sites used to pass outgoing links, and when a network is detected the credit it passed to every site it links to can be lost 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. Unlawful (in the UK, gaining unauthorised access to a computer is an offence under section 1 of the Computer Misuse Act 1990), treated by Google as hacked content under its spam policies, 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 spam explicitly, and its systems for detecting it have improved in steps that the gambling sector has felt each time, from the Penguin system announced in 2012 to the December 2022 link spam update. Two mechanisms apply. Algorithmic systems neutralise links they judge to be unnatural, so a purchased link may simply count for nothing, which means the money was wasted. Manual actions, applied when a human reviewer finds a breach of the spam policies, rank the affected pages or the whole site lower or omit them from results until the problem is fixed and a reconsideration request is accepted. Google says most reconsideration reviews take several days or weeks, and link-related requests may take longer.
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 casino content placed on newspaper and magazine domains. Google's own policy gives a third-party "best casinos" page on a medical site as an example of a violation. The policy took effect on 5 May 2024, and in November 2024 Google said such content broke the policy regardless of whether there was first-party involvement or oversight. A publisher hosting a casino guide for a fee risked having that section demoted by manual action, and a gambling site that relied on it would lose the traffic with it. In August 2026 Google clarified the criteria: a human review now weighs how far the host controls the content, including its presentation, quality, stated authorship and whether it appears on other sites, and gives examples of integrated, clearly attributed partner sections where it is unlikely to act. From 30 August 2026, following discussion with the European Commission, Google no longer applies these manual actions to results shown in the European Economic Area: there the affected section may instead be separated in Google's systems so that, over time, it ranks independently from the rest of the site, casino content against other casino content, while outside the EEA the demotion still applies.
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 early in due diligence.
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 (in Ontario, operators must ensure that the affiliates and marketers they pay do not also promote gaming sites that take bets from Ontario players without an AGCO registration), and because a manual action on an operator's brand terms is an existential problem rather than a traffic dip. Many 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. Google advises that every page you care about should have a link from at least one other page on the site. 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. A reference page on a subject such as match-fixing should, for exactly this reason, be linked from every article that touches the subject.
Cleaning up
A site that has inherited a bad link profile, through acquisition or history, has two tools: outreach to have links removed, which often fails but which Google expects as a good-faith first step before a manual action is lifted, and the disavow file, which tells the search engine to ignore specified links. Google says most sites never need it and that it should be used only where there are many spammy or artificial links that have caused, or are likely to cause, a manual action; it warns that used incorrectly it can harm a site's performance in Google Search. 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 at scale 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.