Check out the http://handmadecraftshow.com/ website and Chelsea Rainbows blog to read an informative summary.
This is a site where you pay a small fee each month and they showcase your items. They accept handmade, supplies, and vintage. The staff helps you set up your virtual booth with pictures of your product and a banner. HandmadeCraftShow does their own advertising and their goal is to get your shop "out there" and noticed.
The site does not have a shopping cart. The purpose is to feature the handmade artist and then lead people to your shop. Buyers can then purchase the item that caught their eye or browse around your shop and maybe find other items they like.
Here are a few of the shops that currently have booths:
I would show you pictures of the booths, but that doesn't seem to be working too well....but if you click the links you can see how nice the booths look. I'm seriously considering trying this out.