I don’t know. It doesn’t seem big enough. What’s the point of working to earn a currency that nobody accepts? These currencies have to reach a critical mass to work and they never overcome that hurdle.
Now that I think about it, to break state control over money we don’t need a new currency, but a way to secretly wire the old currency in which people trust. The state can inflate that, but the main problem is that there’s a tax on every transaction. Once it becomes normal to wire money underground, new currencies will emerge. Alternative currencies like BitCoin and Liberty Dollars are handicapping themselves by trying to implement underground money and a new currency at once, which is just too unsafe and unreliable for people to accept. So it never takes off, it never becomes a generally accepted method of payment, and it’s not worth having a currency that you can’t buy anything for.