Code to 'stalkdaily' xss attack
This is as trivial as XSS attacks get. Third on the XSS cheat sheet: http://ha.ckers.org/xss.html
That was the original (afaik) code. It was changed a few more times with randomUpdate containing different strings. The latest I saw before the url of the script changed was http://mikeyylolz.uuuq.com/x.js (404'd now)
Goes to show how few attacks are currently performed on sites nowdays. Twitter survived all the fame, competition, and development without this happening until now