Just discovered this new addition to Xbox Rewards program for April - http://rewards.xbox.com/mypunchcard/
Reap the Rewards!
Welcome to MyPunchcard, an exclusive feature intended for our most loyal members. By playing games and completing other fun activities, Xbox LIVE Rewards members can earn punches for big rewards. Each Punchcard is unique and new ones are popping up all the time, so stop by often and see if you're up to the challenge!
April Rewards 01/04/13 - 30/04/13
Only the most devoted Arcade fans have what it takes to black out all three Arcade Punchcards. Those who do will be guaranteed a spot in an upcoming VIP Exclusives!
*Xbox LIVE Arcade game purchases must be 400 Microsoft Points or more.