I think it's a good idea myself.
I really appreciate the idea behind freecycdle, but I don't have a local one and my nearest one I've joined always bikcers, and have started a poll up saying they don't want to have people outside their area join (like me), so I've given up on it.
But even if this board was used for recycling threads '100 ways to reuse a Christmas Card', or '100 ways to reuse a loo roll tube'... etc. Local swapping would be good be a good bonus if it proved to work out as well as getting grapes to meet each other