I think it's not as good as it sounds, I mean it seems utopic, this comes from the fact that we don't really know who is behind them even though some claim that are, but I also think that the time in which we are in is optimal for investing in them, because I think that in the future it wont be as easy, governments and banks will find a way to tax them. By saying all that it is also very important to mention BE CAREFUL BEFORE INVESTING MAKE YOUR OWN INVESTIGATION AND KEEP IN MIND THAT THE POSSIBILITY TO LOSE MONEY IS HIGH!!