Can Craigslist do this?

I watched a film presentation called "Zietgiest: Addendum", which is about the monatary system from a progressive perspective. I highly recommend this movie. It has validated my anger and suspicions about participating in a ridiculous and failing economic system. To celebrate the coming break out of a financial prison I am reposting an idea I had for using the internet to set the wheels in motion toward making money obsolete.

Here's a thought:
We're in a recession, right? Why don't we use these social networking services for something practical. I figure there could be a link where you belong to a trade/barter network a bit more advanced and user friendly than craigslist. There should be a couple of catagories; one for skills to trade (ie sewing, painting, automotive skills), another for stuff (ie doors, furniture, trailers), and a third catagory for what you need (plumbing, plane tickets, new windshield).
So, you type in what you need into a little box, "Fence Repair", and then a list of people that repair fences or have access to wood or a wood shop pop up along with their list of needs. If you have a skill or thing you can trade then you get your annonymous email to contact each other and make the trade.
Make sense?