has anyone here used zunafish.com?
you can trade games you don't want anymore for games other people don't want anymore. also, DVDs, CDs, and books. I've had one successful trade, since there's not a lot of games I'm willing to part with. I got Fire Emblem for Viewtiful Joe. I'd say I came out on top with that trade.
But the community on there is very small. I have a list of many games I want (spanning Gamecube, DS, and PS2), and there's not much to choose from.