Firstly there's a difference between impartial third parties and third parties which a record of being impartial.
Secondly I wouldn't endorse using OpenBazaar in its current state. The ideas and concepts are there but the user experience is inconsistent and awful.
https://medium.com/openbazaarproject/verified-moderators-c83...
Here's a post detailing what I was taking about. Unfortunately OB's interface for these things are awful and I'm not invested in its platform.
That was the point I was making: the idea of an 'impartial third party' on an anonymous blockchain is a pathetic joke. OpenBazaar's half-assed solution is to:
1) Moderate the moderators: Great, now we have two problems.
2) Try to tie moderators to a real-world ID: Realising they have to roll back the purported 'features' of crypto-currency (anonymous, peer-to-peer, unrestricted, etc), in order to try to get somewhere close to normal, real-world, commercial transactions.
Here's a post detailing what I was taking about. Unfortunately OB's interface for these things are awful and I'm not invested in its platform.