Bots aren't just programs on IRC. There are a bunch that run on ICQ, AIM, MSN messenger, ect. now. Most of them are basically just advertisement bots for porn sites, but a friend of mine wrote one that contacts random males in the us betweent the ages of 18 and 25 under teh guise of being a 17 year old girl. Then it attempts to have cyber sex with them. It evaluates the text responces, searches for keywords and then generates a responce based on those keywords.