Restaurant.com is giving away $30 million in free gift certificates from now until Christmas Day! You can send up to 3 FREE $10 gift certificates via email, every day until December 25. You will have to register for an account to use the service. And yes, this is a legitimate service. I have purchased from them in the past and the coupons really work.
P.S. If you decide to purchase gift certificates from Restaurant.com, ShopAtHome.com (see add at the bottom of this page) is offering a 15% cash rebate on your purchase!