That is a little bit of a grey space in Search engine optimisation: Google’s Research Central documentation states that “​​any links meant to manipulate PageRank or perhaps a web page’s position in Google search results may very well be regarded as Portion of a link scheme along with a violation https://www.seoclerk.com/private-blog-networks/1025533/POWERFULL-PBN-1000-Web2-0-300-Directory-500-Wiki-500-Forum-Profile