What is Private blog network (PBN)?
Private blog network (PBN) refers to a group of authoritative websites that are linked together to increase the search engine rankings of one or more money sites. These authoritative websites can be bought, created, or acquired through various means.
A PBN is usually made up of expired domains with high authority backlinks and relevant content. The idea behind a PBN is to create a network of powerful websites that can be used to link back to your main website in order to boost its ranking in the search engines.
However, using PBNs for SEO purposes is considered a black hat technique by Google and other search engines. This means if you're caught using this technique, your website could be penalized or completely de-indexed from search results.