If you are a chronicle subscriber get the Gusto Card!
We got the Gusto Card last year, and let me tell you, it's well worth it. We are subscribers to the Chronicle, and if you notice sometimes they have a lot of restaurants listed. Well, that's because they offer great discounts for many restaurants in the bay area. We use ours at Coconut bay, Pancho Villa taqueria, and Diving Pelican, which are great places on the peninsula to eat! It usually gives no less than a 20% discount on your meal, just for showing it!! No strings attached, which is cool.I'd recommend it if you're already a subscriber. It's free!