They have moderators and ratings. Moderators are a third party in a multi sig transaction. More info here: <a href="https:&#x2F;&#x2F;blog.openbazaar.org&#x2F;decentralized-reputation-in-openbazaar&#x2F;" rel="nofollow">https:&#x2F;&#x2F;blog.openbazaar.org&#x2F;decentralized-reputation-in-open...</a>