I was very interested in this article and I am a big fan of the company but I think its innovations are also its biggest downsides unfortunately .Security and anonymity are the most important and I think these things do not go hand in hand with security :

-connects buyers and sellers of bitcoin via the contacts in their phone as well as the contacts of their contacts.

-using phone numbers and contact lists

-Until both parties decide to reveal their identities, you don’t know who the other person is, but you can always see how many mutual contacts you share and who those people are, and eventually ask them for a reference

but it's a great pity although in the Czech Republic , Slovakia and will certainly find users