- A troll is an internet user that posts messages which deliberately degenerate the quality of discussion. They may post numerous and often contradictory messages aiming to entice newbies into a heated discussion. Typical trollic posts will contain killer phrases and lack real supporting evidence.
- An electronic mail message, Usenet posting or other (electronic) communication which is intentionally incorrect, but not overtly controversial (compare flame bait), or the act of sending such a message. Trolling aims to elicit an emotional reaction from those with a hair-trigger on the reply key. A really subtle troll makes some people lose their minds.