Internet troll: A person, usually operating under a pseudonym, who posts deliberately provocative messages to a
newsgroup or
message board with the intention of provoking maximum disruption and argument. They are often paid by nefarious sources but sometime are motivated to do so for their own amusement. They often try to provoke dissension and doubt by writing dis-informational letters to the editors of newspapers.
Another good definition of an
internet troll: A person who purposely and deliberately starts an online or media argument in a manner which attacks others on a forum without in any way listening to the arguments proposed by other commenters. He will often use ad hominem attacks.
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