If you’ve signed up for Xbox Live Rewards and you faithfully get your 20 Microsoft Point surveys done, then this will be good news for you. Microsoft has recently introduced a system that rewards you with birthday items and points back on your Xbox Live purchases. You receive a few percentage points back on purchases so keep an eye out on the rebate.
Perks are based on the amount of Gamerscore you’ve achieved by unlocked those Achievements. You can check your status at the Xbox Live Rewards site here. I’m a LEGEND status of course. (smile)