Massive Distribution of FREE XBOX Live Games and Membership Codes!

i don't know if it will work for you, but it did for me...
Anyway, try this site:

Free Xbox Live Gold Codes
msxboxlivegoldcodes.blogspot.com

Free Xbox 360 Games
xboxgamersplanet.blogspot.com

I saw this last night by accident. I think it's legit though, at least
that's what i thought.