content: Say someone decides to match cell phone geolocation data and call contacts data with known pedos, child victims and known sites of abuse.  What this could be used to do includes matching known members to unknown members by seeing things like who travels with them, who visits the same locations, who meets them.  Particularly given that facebook likely has much more info than revealed. And this is the big thing.  The behaviour patterns can be matched with regions with no known pedo circles to predict the likely pedo circle members with simple machine learning.