Register for Marriott Rewards MegaMiles Promotion, here and receive triple airline miles for a limited time.
Promo rules state:
* Stay at any of the more than 3,300 participating hotels between February 1 and April 30, 2011
* Earn triple miles with your preferred frequent flyer program with your second stay*Existing members: in order to participate in this promotion, you must have miles as your earning preference. If you currently are earning points, you will need to update your profile to earn miles and choose your preferred frequent flyer program, before you can register.