The Thrifty Foodie: Online Steal or Too Good to be Real???

I was recently tipped off to a website called http://www.restaurants.com/ that appears to sell gift certificates for restaurants at a discount of 50%- 70% of it's face value. I have been checking it out this week trying to figure out what it's flaw is. So far, I can only see two things that could be seen as a negative, but they are minimal in my opinion. The first is that most of them have a minimum purchase requirement, but it's usually only $5-$10 over the gift certificate amount. The second is that they add 18% gratuity to your check, so if you are a poor tipper you will find this to be offensive. Other than that, I am psyched to try this out! And for people who are outside of CT, check this out as well, it seems to be nationwide!!!

Just doing a random search of Hartford turned up the following:
El Sarape Restaurant $25 GC for $10.00
Churrascaria Braza $25 GC for $17.50
Papacelle $25 GC for $10.00
La Fonda $25 GC for $10.00
Vito Pizzeria $25 GC for $17.50


New Haven Deals:
John Davenports $100 GC for $40.00, $75 GC for $30.00
Downtown at the Taft $25 GC for $10.00
The Kitchen Table $25 GC for $10.00
Istanbul Cafe $25 GC for $10.00
Bru Cafe $10 GC for $5.00


Could be an excellent method for saving money in 2011 on dining out, which we all love to do. I am curious, I am wondering if anyone has tried this website yet? Thoughts? Problems? Success stories?