American Express Membership Rewards - free shipping at Amazon.com for Amex customers

thought amazon.com is general-interest enough to post here; i only saw the offer recently in the platinum section of the amex website. apparently it's good for amazon.com orders of $50+ that are paid for with amex gold, platinum, or centurion. promo code is AMEXSUMRFRCC

Thank you, Pynchonesque. This is a nice offer that I'll need to check out. I often have Amazon ship items to my parents in CA and bring them back with me on the plane (cheaper and faster than overseas).