Private Blog Network (PBN) backlinks are links built from a network of privately owned websites to another site. The PBN sites only exist to link to the main site, and hopefully push the pages up the search engine rankings. PBNs can work because Google’s algorithm uses a website’s link profile when deciding where to rank it. The idea is that pages attract links when the content is worth linking to, so a high number of links can be a sign that a page is high quality.
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