On October 25th, Blizzard/Vivendi payed a personal visit to Michael Donnelly, creator of WoW Glider and accused him of violating the DMCA. Their demands were unclear, but come in the wake of recent player bannings for using bots in the popular MMORPG. It looks like he's going to fight it, but I think it'll be an interesting case if it ever reaches the courts."
From the post: "The visitors from Vivendi / Blizzard made demands of Michael and stated that if the demands were not met that they would file a complaint in court if he did not meet them. I asked Michael what the demands were. He was unable to comment at the time to the exact details. But I do know they handed him a copy to very briefly 'Look at'. He was not given a copy. I think I could make a good guess and say that they asked for Glider to be shut down and if they feel that they have been harmed they may have asked for a financial settlement."
A collection of all the legal documents filed by Blizzard can be found here!