I also think that it's a very interesting project. There are a few other projects with a similar value proposition like particl.io which had their genesis block creation a few days ago and who are also looking to create a decentralized marketplace with similar features. If they can somehow figure out the legalities of this (best case scenario through anonymization and encryption), this could become very big. Only time will tell which of the marketplaces will survive.
RE: Openbazaar