In the context of SEO, Private Blog Networks are the secret sauce for many practitioners. Many of the best operators in the industry have isolated networks that they can use on their following projects. It is a highly effective strategy, but it is also not sanctioned by Google, which goes against Google's guidelines. That makes it Black Hat, which is why many people in the industry are fundamentally against using PBNs to rank websites. Despite being against them, many of them will have a secret network. You need to be wary of people proclaiming about Private Blog Networks. Read More