Just wondering if you are somehow invested in OpenBazaar because I just cannot see an ecommerce solution being successful which requires a download, why add another barrier?
Hello Fortify, I am not invested or in anyway associated with them other than I am testing it out. OpenBazaar is decentralized and so it shares many of the same advantages as bitcoin over centralized currencies. If you are interested, the marketplace uses multisignature addresses to implement ricardian contracts with escrow.
Much like bitcoin, if/when it becomes popular enough, services would be built to make it easier. Currently it's in a very alpha phase with only one implementation. Think of bitcoin during the first alpha releases of the reference bitcoin client.