shadowmirage: I believe this key has been re-deemed by some unruly ninja already (or then I'm doing something wrong).
Your post has no links on how to re-deem the beta key, could you perhaps post the links again?
It's a shame if it's gone, I've been a WoW player but have recently run out of money and therefore game-time. I would have loved to test out the beta :(.
Sad as it might sound, at this point in my life, games are the only joy left to me.
As I said in my edit; all Raptr says to do is go to battle.net. I guess you could also do this via your account, but not sure. I have no way of telling if it is redeemed or not. Wish I could, but people should say thanks or at least say they grabbed it. Unfortunately it happens too often!
Edit: I found a forum post on Raptr to show you what to do; in case it hasn't been redeemed yet. check it out to see if it helps some.