baiter

Noun

 * 1) Agent noun of bait; one who baits, as a fishhook.
 * 2)  A troll who deliberately posts aggravating messages on a message board to elicit responses.
 * 1)  A troll who deliberately posts aggravating messages on a message board to elicit responses.
 * 1)  A troll who deliberately posts aggravating messages on a message board to elicit responses.
 * 1)  A troll who deliberately posts aggravating messages on a message board to elicit responses.