[boredinballard]

There is a project called BitMarket that runs a market on the bitmessage platform, really neat.

https://github.com/AyrA/BitMarket

https://bitmessage.org/forum/index.php?topic=3549.0

[lappa]

Just a note: This is not decentralized, it is just a centralized marketplace using the decentralized network Bitmessage.