Term that originally referred to internet forum posters who attempted to disrupt good conversation with inflammatory rhetoric. Now used primarily as an insult by real trolls aimed at those making arguments the other forum members don't like.
Although many forum admins won't allow name-calling, members often get around this rule by throwing around the troll ad hominem excessively.
RedState - The supreme court just ended freedom as we know it by passing government run healthcare.
MisterReason - The Supreme Court is not capable of "passing" bills. The PPACA is not a government run healthcare proposal. All healthcare will still be privately run.
RedState - TROLL ALERT!
DixieChic - Who let the troll in the door?
TheGipper - Someone ban this troll