This deal has ended.
Get $25 dining certificates for as low as $6 at Restaurant.com via code BALL through 4/5. This also drops the price of a $15 gift certificate, which sells for $10 to $3. Not all restaurants participate, but there is a wide selection (18,000+) to choose from. Note that most exclusions were recently lifted, but just make sure that you read the fine print as some exclusions may apply.