Etsy

www.etsy.com
Unique visitors, January 2009: 2,074,000 (Nielsen Online)

Etsy is a marketplace for hand-made goods, supplies, and vintage items.

Pros: Etsy shops offer access to a loyal community of crafters and lovers of all things homespun.
Cons: The site bars you from selling anything mass-produced or any handicrafts that you didnt make yourself.