Restaurant.com sells $25 giftcards for $10, but if you use the coupon code FIRST then you'll get 80%, which means you get the giftcard for $2. Not too shabby. Or you can get a $10 for only $0.60 after the discount. The only catch is that you have to pick ahead of time which restaurant you are going to use the card at and they don't offer cards for nationwide chains. But if you're like me, you enjoy eating at a few local Mom & Pop's type joints and Restaurant.com surprisingly has many of my local ones listed.
As always, please make sure to read the fine print. You might want to read through this thread on Slick Deals as well, where some people have shared their experiences (good and bad) with Restaurant.com