After you sold goods and shipped them to the customer, the customer can just destroy your funds with no reason or control at all (very bad for an anonymized market). As a seller you just have to trust the buyer. Savact worte in their PoC that this literally wont happen often, but derived that conclusion from an absolutely unrelated dataset using ebay customers , which is worthless. Apparently they already had an ICO, which I can only guess failed because they are not revealing any numbers. Smelly fishy, so its a no for me, DYOR