Blizzard Threatens Diablo III Cheaters With Bans and Suspensions

I'm not sure why they feel the need to warn cheaters rather than just invoking their right to ban and suspend accounts that are found to be using assistance programs, but that's exactly what they've done. So if you're someone that's been using a hack, cheat, bot, or exploit, you may want to go down the straight and narrow before it catches up to you:
Blizzard Entertainment has always taken cheating in any form in Blizzard games very seriously, and that's no different for Diablo III. If a Diablo III player is found to be cheating or using hacks, bots, or modifications in any form, then as outlined in the Diablo III end user license agreement, that player can be permanently banned from the game. This means that the player will be permanently unable to log in to Battle.net to play Diablo III with his or her account.

Playing Diablo III legitimately means playing with an unaltered game client. Doing otherwise violates our policies for Battle.net and Diablo III, and it goes against the spirit of fair play that all of our games are based on. We strongly recommend that you avoid using any hacks, cheats, bots, or exploits. Suspensions and bans of players that have used or start using cheats and hacks will begin in the near future.
I'm all for "the spirit of fair play", too, which is why I'd prefer that a real-money auction house didn't even exist.