"WARNING: Cryptocurrency Scams and Ponzi Schemes Everywhere." Louis makes a really good point.
I'm a long time supporter of yours and the Blockchain, but I just wanted to note that in the continuum of Good (at one end) vs. Bad (at the other), a few crypto-ponzi schemes are going to hurt a lot of people and set back much good that the Blockchain can and will do.
Not a hard criticism, just a suggestion.