The Xbox Live Rewards program is up an running in the US and UK which allows users to earn points for everyday use from playing games to watching movies (if you have Netflix) or renewing Xbox Live subscriptions. Yes, these are real Microsoft points that you can you in the martketplace to purchase themes, maps, dlc, and other various items available. I think this is a great idea, you earn real rewards for things you love to do, gaming!
All you have to do is sign up here and it’s free to do so. You must have an Xbox Live account though.