American Express Membership Rewards cardholders who pay with their American Express credit card can earn an additional 1,000 bonus points when staying at an Aloft, Element or Four Points by Sheraton hotel in the U.S. or Canada through Nov. 15, 2011. Registration is required at www.insideflyer.com/link/?5126. To earn the bonus, you must stay at an eligible rate (any rate that qualifies to earn Starpoints) and pay with an eligible American Express card that is enrolled in the U.S. Membership Rewards program. American Express co-branded cards will not qualify for the bonus points. Members will receive a Bonus Points Certificate four to six weeks after the end of the promotion on Nov. 15, 2011. Redeem the certificate online before the expiration date at http://www.membershiprewards.com/BonusPointsCert and you will receive the bonus points within 24 hours of redemption.