there is also the term "trolling for flames" that describes this behavior. It is the equivelent of picking a fight. My dh has a few sites he goes to when he is feeling aggressive (bad day at work, lunch with my parents...lol) that are pretty much a bunch of people trolling for flames. I mean that is all they post, everyone. It's a battle of wits and many of the threads end up pretty funny...vulgar, but funny. A kind of "fight club" for nerds.
edited to add: dh didn't like this explanation. (can't really be considered trolling if that is what the community is for) His definition is good - somebody that goes to an online forum with no intention of being a part of the community, just wanting to stir up trouble.
Mom to 10yo Autistic Wonder Boy and 6yo Inquisitive Fireball Girl . December birthdays.