Originally Posted by ErdricK
ah I hate to say this but you guys are all wrong about WOW.
You can copy the entire WOW folder and play out of that. I have done this several times....copied my WOW folder to an external HD, took it to work and just copied it over and played that way.
World of Warcraft installations/updates do not edit or alter the registry (or any other files on the computer). I have downloaded WoW, completely updated it and copied the folder onto an external hard drive and put it on my laptop and gave it to a friend. Also when I have formatted my computer in the past, I have copied the folder to my storage hard drive and then copied it back over. No problems, no repair needed. WoW is just that good!
As for the CD key myth, No, the cd keys are account bound, not CD bound.
It also keeps all of your UI mods intact and configured the way you left them. I don't always agree with Blizzard, but this was a great design choice. And thats why WoW is king.... for now.