Wired has a story about Chatting AIM Bot, described as “a free service that lets anyone play a devious practical joke on a friend, in which an artificially intelligent AOL instant message, or AIM, bot carries on an innocuous, 10-minute conversation before finally lowering the boom and informing the unwitting human at the other end they’ve been had.”
The bot, which apparently IMs the victim using the capitalization-challenged, abbreviation-loving style common to 13-year-olds, then emails a transcript of the conversation back to the victimizer.