This deal has ended.
Get 50% off dining certificates at Restaurant.com through 1/23 via code DINE. This drops the price of a $25 gift certificate, which sells for $10 to $5. Not all restaurants participate, but there is a wide selection (18,000+) to choose from. Just make sure that you read the fine print as many restaurants exclude alcoholic beverages, weekends, and holidays and most set their own spend minimums.