Definition
Expired domain abuse is buying a domain that previously hosted a different, reputable site — and still carries backlinks and residual authority from that history — and repurposing it to host content unrelated to its past, in order to rank that content on the strength of the old domain's link profile rather than its own merit. A defunct charity, a closed local business, or an old blog might be bought and turned into a casino affiliate site or a link source.
Google has a specific spam policy against this practice.
The policy is aimed at the intent to exploit inherited authority for unrelated, low-value content. Legitimately acquiring a domain and continuing or evolving its purpose is different from grabbing an expired domain purely as a ranking asset for content its audience never signed up for.
In context
For iGaming affiliates, expired domain abuse has been a common tactic — buying aged domains with existing backlinks and standing them up as casino or betting sites, or using them as private link sources pointing at a main money site. Google's dedicated policy has made this riskier: such sites and link networks are targeted, the inherited authority does not transfer to unrelated gambling content the way it once appeared to, and a link profile built on repurposed expired domains is exactly the kind that draws link-spam action and requires disavowal to clean up.
The durable approach is the same as elsewhere in the niche: build authority on a domain whose history and purpose are consistent, through genuine content and editorially earned links. If an affiliate acquires an existing domain, the defensible version is continuing a related purpose and keeping the content aligned with what the domain's links and audience were about, not bolting an unrelated gambling site onto a borrowed link profile.
For affiliate-facing content, the framing is that expired-domain tactics are now an explicitly policed spam pattern with no reliable payoff, that inherited links from an unrelated past do not confer lasting ranking power on gambling content, and that authority has to be earned on a domain used honestly for its stated purpose.
Worked example
An affiliate that ran several casino sites on repurposed expired domains sees them lose rankings as Google's expired-domain-abuse and link-spam policies take effect. It consolidates onto one domain with a consistent history and purpose, disavows the worst inherited links, and rebuilds through original content and earned links rather than buying more aged domains.
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