Alas, another great idea I thought up and never did anything about, and now someone else did...story of my life.
Veggie Trader "your place to trade, buy or sell local homegrown produce."
Kinda like craigslist but for produce. I haven't tried it yet. It's still to cold here in Jersey to start planting. But, I am fascinated by this concept. I just hope the focus is on sharing and trading as opposed to selling and buying.