Heh, I just won a copy of Crazy Machines 2 as well.
Thanks for the link saturn.
EDIT: Also got a promo code... twice... and it was the same one both times.
It only seems to be worth $5.
If I had a $50 code I'd probably buy a GTX 275 or 260 just for the hell of it.
EDIT2: These guys seem to have gotten the $5 and $10 codes and posted them for everyone: