Marinea, a company planning to establish a self-sustaining “Village At Sea’ between Miami and Cuba, plans to use bitcoin as its currency and eventually have its own electronic currency. Bitcoin, a decentralized currency with no centralized governing authority, naturally fits the Marinea goals of being an independent, self-sustaining society. Marinea is a utopian concept for a village existing in harmony with nature, where citizens will be able to live their lives as they see fit. Another goal is to address the challenges related to limited available land for food cultivation and human habitation. According to its website, the project has...