Have you listen to bitcoins? It's the craziest thing - individuals are in the process writing their particular product development definition and inventing a fresh currency! This currency does not have any ties to the government or country. The whole thing "lives" within the minds in the computers who together form the Internet. The math behind this is a tad complex, nevertheless it seems to get growing in popularity and, most importantly, you can easily buy things using bicoins. Microsoft recently announced which they would accept bitcoin in payment with regards to products.