There was an interesting discussion on FaunaClassifieds a while back between a few people who actually admitted that they acted as trolls in order to bring down competing forum site. Trolling is actually used as a kind of cyber-warfare apparently. I'm surprised it isn't more of a problem here.
But I will keep on my toes as much as possible around here, and ask you all to be on the lookout as well and let me know if you see trouble brewing. This message board software has several tools available to help with this sort of problem.
But in all honestly, the best way to defeat trolls is by completely ignoring them. And since this site has a method where any user can block out ALL messages from any particular poster, this is extremely easy to do.
Thanks.