I read about this site in the All New magazine. It's basically an aggregate site that lists gift cards for sale on other sites and who has the best price. It also lists who is paying the most if you want to sell a gift card.
There is also a challenge section. They challenged a woman with 2 kids to live on discounted gift cards for a month, everything except rent and utilities. It was pretty interesting. She saved about 10% overall.
I bought around $175 of Walmart gift cards from Plastic Jungle today, saving 3%. I've noticed the discounts are getting smaller on a lot of cards I used to buy. Either less people are selling, or more people are buying so they can charge more. Even so, for places I got to all the time even 3% adds up.
I finished reading the library book Gideon's Sword by Douglas Preston and Lincoln Child. Adventure - very good.