more and more SEOs are complaining that their PBNs are getting penalized by Google.
To help stop the bleeding, here's a quick list of common PBN footprints that can lead to your network getting HAMMERED by Google
Interlinking to other blogs in the network
Duplicate content from other blogs in the network
(BIG ONE) running ads with the same AFF ID in the network
Selling backlinks from your network (remember: you can't control the person who buys from you - what if this person buys from a network that got penalized?)
Care to add to the list?