Take 70% off dining gift certificates at Restaurant.com via code PREZ through 2/19. Restaurants give the certificates to Restaurant.com, which the site sells for less than face value. For example, a $25 gift certificate, which Restaurant.com sells for $10, is now only $3 via the coupon code. A $10 certificate, which normally sells for $3 is now just $0.90. Obviously, not all restaurants participate, but there is definitely a good selection to choose from. Just be careful to read the fine print as many restaurants exclude alcoholic beverages, weekends and other things.