First off, I have an extra Xbox 360 Future Soldier multiplayer beta key XFQ3Q-FTKHR-TGG3K-QJMFW-R9TRZ
Secondly, you can get your own! If you sign up on Raptr, and then go to Raptr Rewards, there was a beta key link. Also, according to Raptr, I play video games. A lot of video games. A sad amount of video games.