Code: SAVE
Discount: 80% off
Expiration: Thursday, June 10, 2010

Code: DAD
Discount: 70% off plus a free $10 Restaurant.com gift certificate
Expiration: Sunday, June 13, 2010

Code: FATHER
Discount: 70% off plus a free $10 Lobstergram gift certificate
Expiration: Sunday, June 20, 2010

Code: SUMMER
Discount: 80%
Expires: Thursday, June 24, 2010

I thought of a possible loophole. Since promo codes can be used to buy restaurant.com gift cards, one may buy gift cards at the 80% (highest?) discount available at the time up front, and then use that card to buy the specific restaurant gift certs as needed on an ongoing basis (gift cards don't expire). This eliminates the need to only buy when the high discount code is out. Has anyone tried this? Also, why do the offers keep constantly changing? I noticed restaurant.com awards 18 miles per dollar spent through the AAdvantage E-Shopping mall - good deal. Has anyone had experience with TrialPay?

EXTENDED:

Code: SUMMER
Discount: 80%
Expires: Wednesday, June 30, 2010

Code: FREEDOM
Discount: 50% off
Expiration: Tuesday, July 6, 2010

Already up to 80%
 

Code: FUN
Discount: 80%
Expires: Monday, July 12, 2010

jetBlueNYFL, the system you describes definitely works. You can even buy one of the monthly subscriptions with a discount. Last Christmas I bought a family member a 12 month subscription to Diner of the Month for $24 (80% off). They got 12 $25 certificates a year and Restaurant.com even threw in a freebie for me so it = 13 $25 gift certificates for $24.

Is it common for any of the restaurants to accept more than one certificate at a time? That would be a real bargain!

Nope.

Of course that's how you do it. That's actually the only way to get the really popular ones(at 80% discount)at the beginning of the month when there are no discounts yet. Places like Stripburger in Las Vegas sell out(only a certain number are available each month)within the hour of new certificates being available & this is how you get 80% off for places like this.:)
Good luck & have fun.

New code
 

Code: FRESH
Discount: 70%
Expires: Thursday, July 15, 2010

NEXT CODE
 

Code: VACATION
Discount: 60%
Expires: Monday, July 19, 2010

New code
 

Code: TASTY
Discount: 70%
Expires: Thursday, July 22, 2010