FreeCycle Community

Well check out www.freecycle.org

From their website:
When you want to find a new home for something -- whether it's a chair, a fax machine, piano, or an old door -- you simply send an e-mail offering it to members of your Freecycle group.

Or, maybe you're looking to acquire something yourself. Simply respond to a member's offer, and you just might get it. After that, it's up to the giver to decide who receives the gift and to set up a pickup time for passing on the treasure.

One main rule: Everything posted must be free, legal, and appropriate for all ages.