I have a friend who is a GM so I asked him about this whole multi boxing being removed business. Here is what he said. "I haven't heard anything about it being removed, and I doubt Blizzard will be changing it's TOS anytime soon, particularly over something like this. And if Blizzard did decide to all of a sudden change their policy on it, they wouldn't put out a patch note saying 'blah blah upcoming patch no more multi-boxing' they would make it an immediate change and disallow it before a patch even came out. As far as the client being different I don't know anything about how the messaging system works so that may be true, but it isn't a deliberate attempt on Blizzard's part to hurt multi-boxers."

So basically, if Blizzard wants to kill us they would have done so already. And to be honest I think they like us because we are players taking WoW to another level. My GM buddy told me that if any multiboxers enter an arena a GM is required to watch and they get a kick out of it. So next time your 5v5 team is kicking ass don't be surprised to come out and all your toons start turning into cows or grub worms :P