Affiliate – SEO WIKI
An affiliate is a site that does not provide useful new information in relation to another site belonging to the same owner.
If the sites have the same theme, type of hosting, domain registration time, company name and address, IP addresses, reference mass, information about the owners, then they are recognized as affiliates.
If as a result of search results there are several sites – affiliates, then special filters are applied to them. As a result, the main site for this request is determined, and it is he who is shown in the search results, and the remaining sites are eliminated.