Did I mention this before? I find the notion absolutely wonderful. There are local lists for most areas.
Freecycle
One rule: everything posted must be free. Whether it’s a chair, a fax machine, piano, or an old door to be given away, it can be posted on the network. Or, maybe you’re looking to acquire something yourself? Respond to the posting directly and you just might get it. After that it is up to the giver to set up a pickup time for passing on the treasure.
Non-profit organizations also benefit from the Freecycle Network. Post the item or items you want to give away and a local organization can help you get it to someone in need.