An anonymous reader writes "Microsoft has revealed that it RickRolled users that were killing its TechEd conference Wi-Fi network last year by torrenting large files. Network administrators at the event quickly built a list of all of the top torrent trackers around and got the nod to add them all to the local DNS resolver and point them at a local Web server containing some Rick Roll scripts. According to the admin: 'It killed me that I didn't see anyone getting done by this first hand, but there were hundreds of impressions in the server logs containing the Rick Roll scripts so I did get a fair amount of satisfaction at least. It was the most evil of evil Rick Roll scripts too — worse than any that anyone has used to get me in the past.' Fun and games aside, it looks like the leechers will force quotas and traffic shaping for the first time in the event's history."