This is my latest discovery and I am in puffy heart *love* with it. Listia is like eBay but FREE. Yes, you heard me right. FREE.
You list items you don't want (a gift card to a store you never shop at?) or no longer use (Cheech and Chong not your style anymore?). People bid on those items with 'credits' and when the auction is up, they get the item and you get the credits. Then you take your credits to shop for stuff you DO want.
Seriously, it's THAT simple.
So what are you waiting for?