Bitmarkets is an anonymous decentralized market based on two party mutual security deposit escrow.
It's fully peer to peer (no central servers), no fees, no middle men, no altcoin,
built on Bitmessage, Bitcoin and Tor, open protocol and source, working today.
I watched openbazaar from the start, through many 'refactorings' and design changes (mainly networking problems.
It is truly a disappointment, but did have lessons to be learnt.
Bitmessage is a horrible bandwidth black hole, for example. I can't see you getting to ebay sized traffic with that. How do you keep it under control?
Tor and anonymity are definitely a plus. OB seemed to steer away deliberately from this, despite it's origins as a darkmarket.
I believe OB has decided to allow 2 party transactions, reluctantly, but I don't know if there will be a security deposit mandated.
Overall, this looks like a job well done. It's a pity it didn't get more notice earlier.