L8DYV said:
troll v.,n.
1. [From the Usenet group alt.folklore.urban] To
utter a posting on Usenet designed to attract predictable
responses or flames; or, the post itself. Derives from the phrase
"trolling for newbies" which in turn comes from mainstream
"trolling", a style of fishing in which one trails bait through a
likely spot hoping for a bite. The well-constructed troll is a post
that induces lots of newbies and flamers to make themselves look
even more clueless than they already do, while subtly conveying to
the more savvy and experienced that it is in fact a deliberate
troll. If you don't fall for the joke, you get to be in on it. See
also YHBT.
2. An individual who chronically trolls in sense 1;
regularly posts specious arguments, flames or personal attacks to a
newsgroup, discussion list, or in email for no other purpose than to
annoy someone or disrupt a discussion. Trolls are recognizable by
the fact that the have no real interest in learning about the topic
at hand - they simply want to utter flame bait. Like the ugly
creatures they are named after, they exhibit no redeeming
characteristics, and as such, they are recognized as a lower form of
life on the net, as in, "Oh, ignore him, he's just a troll."