An old but good item
Five Ways to Keep Trolls from Killing the Internet by David Wong on Cracked.com
(A wonderful, almost dangerous site because it is so entertaining that you may have difficulty tearing yourself away)
David Wong writes:
Right now if you have a blog or forum or anything else with open comments, and you don't have a human moderator to watch it, you're going to wind up with a wasteland. As soon as more than one troll shows up, they will feed off each other until everyone else is gone. You have to control them. And don't start talking about free speech; the troll's goal is to shut down speech, to either fill the channel with noise until no one can talk to each other, or to get everyone talking about him instead of the subject at hand. He's a guy in a coffee shop screaming nonsense over a bullhorn.
Read more: [www.cracked.com