Restaurant.com is a scam. Be weary of using them. First they have no direct coupons, they give you like a 25 dollar coupon but you have to spend 50. Second a lot of the places on the site, have no idea they are listed on it. Don't believe me, Google restaurant.com reviews.
They do work at some places, I know one of the cafes I went to the only person who knew was the owner. 30 minutes of awkwardness and my meal got comped when he basically said he did that a longggg time ago lol.