I just purchased a 12 months XBL earlier. Because of purchasing the COD:MW3, i can now purchase another 12 months for only $35 + tax. But I wonder if there is any max period stacking on a single XBox Live Gold account?
@Man, I took advantage of the $25 promotional credit I received for pre-ordering MW3. The code extended my Gold subscription that I have on auto-renew into 2013 so I was effectively able to stack once.