If you give me 30 bitcoins I will even give you a free pizza and deliver them almost anywhere. Joke appart, it is effectively useless for now but some places ar

If you give me 30 bitcoins I will even give you a free pizza and deliver them almost anywhere. Joke appart, it is effectively useless for now but some places are now accepting it which means that the usefulness might change sooner than we expect. It doesn't mean the seller won't be able to locate you with the address for the delivery though. Real problem will be if they use Monero or some real anonymous cryptocurrency where fungability is respected.