Nearly off topic, but all these debt issues make me think that this is why "world level" currency like bitcoin can be interesting. If it starts to spread enough

Nearly off topic, but all these debt issues make me think that this is why "world level" currency like bitcoin can be interesting. If it starts to spread enough to reach a critical mass over several economies, this kind of electronic currency can be the only currency disconnected from a single economy. The value of such currency would be function of the volume shared in each economy using it, where economy would be the US, EU, Japan, China etc. You could say, a bit like gold, but easier to pay with. Note that I am not saying I endorse bitcoin or any kind of crypto currency and recommend you to exchange your Euros/Dollars for some. For me, it is too speculative at the moment. This is just the concept which I find interesting.