OpenBazaar is by far one of the most interesting projects I’ve come across in a while. Not sure if it is usable enough to gain traction (since it requires a desktop app), but the idea work, the guiding principles, of the project are sound.

OpenBazaar is a different way to do online commerce. It’s a peer to peer application that doesn’t require middlemen, which means no fees & no restrictions. OpenBazaar connects people directly via a peer to peer network. Data is distributed across the network instead of storing it in a central database.