Orbitz's Twitter is offering 15% off hotels: THXTWITTER [book by 6/27, stay by 9/6]
T&Cs
Book a qualifying hotel between June 25, 2009, and June 27, 2009, for 1 or more night for travel between June 25, 2009, and September 6, 2009, via Orbitz and instantly receive 15% off your booking through the use of the promotion code. To display qualifying hotels, click "I have a promotion code." and enter the promotion code, then look for hotels marked with the icon "COUPON." Limit one discount per hotel room and one promotion code per booking. Discount may not be used toward the booking of a vacation package. Discounts are not redeemable for cash for any reason. Any attempt at fraud will be prosecuted to the fullest extent of the law. Void where prohibited, taxed or restricted. Orbitz reserves the right to change or limit the promotion in its sole discretion.