Sure, we have lots of users in Poland, and also in Germany, France, Spain, UK, Romania and many more.When I went to Poland I remember a lot of people using prepaid phones, is this service popular in the EU?
I highly doubt any of the today known altcoins will be a competitor to bitcoin in 5 years.Which digital currency (litecoin,dogecoin, peercoin etc) do you think will be the biggest competitor to bitcoin in 5 years