Blizzard Entertainment is warning users of the Battle.net online gaming service to play by the rules or else… In a statement yesterday on the Battlenet forums, the company said it recently banned more than 320,00 Warcraft III and Diablo II accounts for violating Battle.net Ts&Cs.

First time offenders have the the CD key associated with the banned account suspended for 30 days, while repeats offenders will see their keys banned permanently. There is no appeal.

Says Blizzard:

We would like all players to remember that abuse of unintended mechanics and/or use of third party programs is a violation of the agreement made when signing on to Battle.net, and can subject your account to disciplinary action up to and including a permanent ban of its access to the service. These types of activities can severely impact the stability of our servers, and we’ll continue to aggressively monitor Battle.net in order to protect the service and its players from the harmful effects of cheating.