Hotels.com is currently offering a $40 discount off your next stay when you use a Discover credit card to book your hotel room at Hotels.com, valid through September 26, 2010.
Book Your Hotel Room at Hotels.com and use promo code DISCOVER2010 to get $40 off your next stay from Hotels.com.
This offer is valid on new bookings of a Price Match Guarantee hotel that are made between April 5th and September 26, 2010, with stays completed by September 26, 2010.
A one-time use coupon code will be emailed to you after your completed stay that is good for $40.
Apply for this $75 Discover Credit Card Bonus if you don’t have a Discover card already in order to take advantage of this promotion, plus get a $75 bonus and cash rebates on your purchases with no annual fee.
Hotels.com Discover Credit Card Promotion Details
1. Offer valid only on the new booking, using your Discover credit card, of a Price Match Guarantee hotel made between April 5th and September 26, 2010, with stays completed by September 26, 2010. A “booking” is at minimum a night stay in 1 room at the same property, booked at the same time on the same credit card. Package bookings are not eligible.
2. You must book and prepay on www.hotels.com or through the hotels.com Contact Center at 1-800-246-8357. Offer is not valid for bookings made on any non-U.S. domain, including, but not limited to, www.hotels.fr or www.hotels.it.
3. If you change or cancel your booking, you will not receive the $40 off coupon.
4. A coupon code for a one-time discount of $40 off of a future booking of at least 3 consecutive nights at a Price Match Guarantee hotel will be emailed to you within 30 days after the stay has been completed. The coupon must be used between September 26th and December 31, 2010, for travel beginning September 26, 2010, and completed by December 31, 2010. Hotels.com may send you an email notification when your coupon is near expiration. Coupon is subject to additional terms and conditions, which are presented to you in the delivery email.
5. Limit: 1 $40 coupon per booking and per person.
6. Not valid with any other coupon offer.
7. Offer may be revoked without notice at any time. Void where prohibited.
Take advantage of this Hotels.com $40 Discount with Discover Card promotion to get $40 off your next stay when you book your hotel room through Hotels.com.

Just a heads up, received a letter from American Express stating that if I spend $40 or more two times at walmart stores or walmart.com between Dec 1 - Dec 30 I'll get $20 statement credit. Although the letter stated this is by invitation only, it recalled me of the same offer American Express has run last Christmas season, during which a lot of SDers (including me) got their $20 credits few days after their 2x $40 spendings even though they did not receive the letters. So this is YMMV but worth a try...

*Qualifying purchases include all debit card purchases made without using a PIN. Such “non-PIN” purchases include purchases you sign for, contactless “blink” purchases, Internet purchases, phone or mail-order purchases, small dollar purchases that do not require a signature, and bill payments (where billers process the transaction as a credit card). Cash advances and cash transactions do not qualify.
If asked “Debit or Credit,” always select “CREDIT” and sign for the purchase. The money for your purchases is always deducted from your checking account when you use your debit card, even if you select “Credit.” When paying bills (e.g., utilities, cable television, telephone) with your debit card, always select “credit card” if prompted or ask the biller to process your debit card as a credit card; do not provide your PIN. The money for your bill payment will still be deducted from your checking account.
Only purchases made from the date you enrolled your card through August 31, 2008, with the enrolled Chase Visa Check Card, United Mileage Plus® Check Card or Leisure Rewards® Check Card will be considered for this promotion. You will earn $25 for every $250 spent in non-PIN purchases during the promotion period – up to $75. The cash back reward will be automatically deposited into the primary Chase checking account associated with the enrolled debit card within 14 business days of reaching the $250 minimum non-PIN purchase amount required for this promotion, as long as the checking account is open and in good standing. This is a special invitation intended only for the Chase Check Card customer receiving this communication directly from Chase and not a third-party sponsor.