Just thinking to myself....and self says, exit scams happen all the time.....
I used TMP and actually liked it...but it died from lack of use. I see Bit-message, and started thinking...what if people would use multi-sig and bit-message to create orders. Just thinking out loud....
Then you would have a secure decentralized escrowed "market" without all the complexity of openbazaar. The only thing missing however is a reputation/feedback/listing system which would end up being a centralized service, in that sense OB would have the advantage.