This deal has ended.
Through 3/17, use code LUCKY at Restaurant.com to take 60% off dining certificates. This means that $10 gift certificates which normally sell for $4 are now just $1.60 and $25 gift certificates, which normally sell for $10 - $15, are now just $4 - $6. Not all restaurants participate, but there is a good selection to choose from (18,000 restaurants nationwide). Just be sure to read the fine print, as many places exclude alcoholic beverages, weekends and other things.