I go one step further. I have found restaurants that participate in the Idine program for which I also get cheap certificates from the "restaurant.com" auctions. I have found some that also participate in "Opentable.com", which by using the bonus reservation times, will easily get you free certificates after a couple of uses. Basically this is a triple dip with very little financial output. The restaurant.com coupons are treated as cash and do not affect your Idine points.