Quote Originally Posted by bikeless in WI
Meanwhile, here's another vocabulary question. What, in web forum parlance, is a "troll"?
The usage of the word troll came about in the late 90's on usenet, to refer to someone who is posting merely to inflame, anger, or bait other users.

For more info:
http://www.help.com/wiki/Internet_troll
http://www.urban75.com/Mag/troll.html