Swappa is great, I've sold around 10 devices on there. Everything is smooth and Ben is a really cool guy.
Originally Posted by Frisco
The front page looks a little dated (mostly old phones), but the concept is nice, with the "buy" and "sell" buttons by each device.
Looks like a good alternative to eBay, etc.
The homepage is determined by how many of a device there is, the Nexus One is first because there are more of them than any other device for sale, and so on.