I have recently (er, last couple of days) spotted localised buy and sell groups on facebook, usually local to a town or small area, in fact I only noticed them because some FB friends joined a couple of local (to me) ones. They seem quite busy.
Anyway, I reckon it could be worth us all sniffing out our local FB buy and sell groups, and listing our stores or auctions on there. One thing; we get local people looking at our auctions, which is handy, but we also drive further traffic to Ebid in general...