Cardnap is a new service which allows you to buy and sell unwanted gift cards.
Gift cards seem to be the present of choice these days (I am the WORST present buyer, I love them), but sometimes you get one for a store you have no interest in shopping at. Well now you can sell it off for cash and buy something you really want.
Cardnap is an Aussie startup, by a 15yr old guy from WA..can you believe it!
Seem to be a few of these popping up, another one is Cardlimbo