Trading?

Anyone want to set up some sort of trading mechanism within the RYM'ers?
I'm not quite sure how to work it, whether it's some sort of lending program, or just simply making a list of tradable items? One idea would be a point system, where you would assign points to each book or dvd or cd you were willing to trade. If someone wanted to offer you a trade, their points would have to equal yours?
I don't know, please give any ideas, and if this is something you'd be interested in participating in.
I'm not quite sure how to work it, whether it's some sort of lending program, or just simply making a list of tradable items? One idea would be a point system, where you would assign points to each book or dvd or cd you were willing to trade. If someone wanted to offer you a trade, their points would have to equal yours?
I don't know, please give any ideas, and if this is something you'd be interested in participating in.