I don’t fully understand the interest in Bitcoin or any other crypto-currencies really. Why would someone want to use another “monetary unit” which has even less backing than any governments’ fiat currency? Being entirely digital seems to make it akin to vapor-ware and criminals have already been seen taking advantage of this by “disappearing with” huge sums of BitCoin, i.e. - Mt. Gox for example. How can any private individual have a sense of trust for this system?