This deal has ended.
Through 8/17, use code CHOW at Restaurant.com to take 60% off dining certificates. This means that $10 gift certificates which normally sell for $3 are now just $1.25 and $25 gift certificates, normally $10, are now just $4. Not all restaurants participate, but there is a good selection to choose from. Just be sure to read the fine print, as many places exclude alcoholic beverages, weekends and other things.