Finally got around to messing with cryptocurrencies this week, despite reading the Bitcoin white paper not long after it was published. Here's my 2 cents. This is a pretty revolutionary and cool technology despite its cult-like following and I think it has staying power. The mining process uses a lot of power which some consider waste. What I consider most interesting is that a government's reaction to crytocurrency seems to be good gauge of a given society's freedom. I recommend trying it out.