Old news.
Restaurant.com ALWAYS has promotions. ALWAYS. I get promo e-mail from them EVERY SINGLE DAY. (Yeah, I know. I should remove myself from their e-mail list.

)
I still have credit with restaurant.com from a purchase I made years ago. I find them EXTREMELY difficult to use -- too many restrictions on the coupons; restaurants that I'm not interested in patronizing. On those rare occasions when I actually can make use of one of their coupons, I feel very lucky.
Obviously, YMMV. Some people use them regularly. I think they're just kind of a pain.