I think the concept of a universal currency without the tensions of inter-country supremacy is one of the best ideas in recent times. This world can do with fewer triggers for violence and hate. One trigger is also the difference between the Haves and Have-Nots which is fueled by the value of each country's currency against the United States dollar. A common crypto currency like Bitcoins seems to be a great solution to ending at least this trigger for hate in the world.
What do you think/feel about crypto-currency?