PBN or Private Blog Networks refer to the network of sites used by a website owner to link out from to boost the rankings of the other websites. For affiliate marketing, that means one site with no inbound links can improve its ranking with the help of other sites. The more qualitative links pointing to a particular page on the website it has, the better rankings such websites will get in result.
As a rule, the PBN sites are owned by the same person, launched across different servers and web technologies to trick Google. There are lots of authoritative and trustworthy links coming from these sites. Up to 2014 that was one of the most effective strategies used for improving the site’s ranking within the Google search engine. However, with the search engine algorithms updating, this method has been banned by Google, and now mostly refers to the black-hat SEO. Needless to mention, for long-term success, most marketers recommend avoiding creating or buying the PBN links for improving the sites’ rankings.
The most effective PBN tactics today work with the real websites that contain original, useful information with embedding the links to the pages marketers need to rank better. Additionally, try to use different affiliate accounts on any of your sites, so the search engine can find no “footprints” between them: use different affiliate links, products, and offers.