User of RESTAURANT.COM?

Have any one you use restaurant.com? Any reviews? The gift certificate prices seems to be too good to pass up, but don't want to go to the restaurant and find out that they are not valid. Any response would be greatly appreciated.User of RESTAURANT.COM?
I use them all the time. They work out great. Especially since you can try an appetizer, entree and dessert. Look on techbargains.com under all coupons and there is usually a coupon code for 50-70% the restaurant.com certificates.User of RESTAURANT.COM?
On their website, there's a section where participating restaurants are listed, by city and state.

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