There isn't presently a way to browse listings, although it's definitely on the feature list. The original idea for user interaction was the following:
1. User goes to website
2. User creates a listing
3. User shares link to listing on other sites
It wasn't originally intended as a marketplace, but we're thinking about turning it into one. By the way, thanks for the tip regarding the image. Fixing it now.
We're proxying the transactions and collecting a 10% commission that goes to a Bitcoin-accepting charitable organization. The current organization we're donating to is the Bitcoin Foundation.
