I found a few PBNs that belong to an SEO agency. What I saw was SHOCKING. In all the articles where they linked to their clients they used NOFOLLOW links. I see two possibilities: 1. They used do-follow links first and once the clients started ranking, they made the links nofollow. However, the most recent post on the PBN blog dates to November 2014 and the client is NOT ranking for the nofollow anchor text keyword. 2. They use nofollow links all the time. Either because they know something WE don't know or they are simply SCAMMING people. Their PBN blog has over 60 posts linking to different niches. It is still indexed. Do YOU know what's up? Are they simply DUMB, are they SCAMMING their clients or are they using some SECRET knowledge? YOU are the expert. Tell me.