Blizzard, the company behind the Warcraft and Diablo franchises, does not screw around when it swings the banhammer, booting 320,000 online accounts tonight from some of its most popular games.
Things that got users banned ranged from "abuse of unintended mechanics" to "use of third party programs".
Any of you affected? If so...you've been very naughty.
Diablo II and Warcraft III Battle.net Bans [Blizzard]