The FtBCon discussion of the psychology of trolls was interesting, but one thing I think it could have used is some appreciation of effective trolling strategies. Look at what they’ve accomplished with wikipedia; they have driven some people off the internet, and the ongoing online harassment is at least a distraction to many of us. This is the real threat: that trolls are working to dominate the discussion, and sometimes they succeed.
Greg Laden is talking about one way trolls work: the Serengeti Strategy. He cites Michael Mann on this topic.