Feb 5th 2009 9:49AM You will only get sued for copyright infringement if the copyright holder can how you are profiting (in real world money) from the breach or preventing the copyright holder from gaining revenue as a result of the copyright breach.
If Blizzard thinks you are using an exploit, you will simply get the typical ban for breach of EULA. IF Blizzard thinks you are using an exploit to gain real money at their expense, then you will get sued. If Blizzard thinks you are breaking the EULA for profit (i.e. gold farmer), you will get sued.
Alarmists pipe down.