The digital virtual communities have exploded in recent years - this phenomenon is enabled by social media and the changing world we live in. In some cases these communities have created their own currency for exchange of goods and services but it has expanded to outside their own circles and provide a new medium of exchange creating new digital virtual currencies that are changing the world. Bitcoin-Central is now the first Bitcoin exchange to become a bank with guarantee funds insured up to EU$100,000. This book explores the new digital currencies and how they are changing the world. When...