What do most of us do when paranoid of self posts? We check the comment history of the OP. We look for a few clues:

  • SRS activity. Since that sub loves the banhammer, you only survive in that atmosphere by parroting the same crap. Any discussion (logical or not) against the agreed viewpoint results in a ban. Therefore, this is a high probability of a troll.
  • Sock puppet. The latest reaction to some of us digging up a troll's comment history. Not a sure sign of a troll, but should raise an automatic flag or two.

I'm not sure of a good formula to show the "likelihood of trollish activity" but there's much smarter people out there than me who could.

Ideas?