It's not a scam. Did you ever sign up for the MGS Playtest thing? I did. I just got a recent email not too long ago asking me to update my information in case they should need to reach me for beta testing.
They've never asked me for personal info such as credit card/social security just Gamertag, email, address (public knowledge anyways), and phone number.
An actual link to the survey would be helpful.
http://www.microsoft.com/playtest/default.mspx







