Through 4/20, take 70% off dining gift certificates at Restaurant.com. Restaurants give Restaurant.com certificates, which the site sells for less. For example, a $25 gift certificate, which Restaurant.com sells for $10, is now only $3 via coupon code FEAST and a $10 certificate, which sells for $3 is 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.