Great, blizzard made their own little version of the bittorent client and called it WoWSneakPeekDownloader.exe.
So instead of downloading a 10k torrent file, I get to download a 3MB downloader that I'll have to download all over again when another blizzard file comes out. I'd rather have them officially support an existing tracker then making their own with it's own software...
Atleast it doesn't seem to really install itself, although they just removed bittorent cross-platform capacities.