by bazza2541 » Thu Oct 21, 2010 1:59 am
They're spam bots.
From past experience the best way to beat them is a captcha system on registration. Although e-mail verification does catch all but the most advanced bots. ( A spam bot is a computer computer program designed to register a username, dump some spam and close down). I used to ignore 'em until one dropped a kiddyporn site at 7pm one wednesday, after that I could ignore 'em no more.