I like the concept very much,sending any amount of coins without any transaction fees is a really great idea and it does not have a blockchain and a entirely different way to send transactions,there is no scalability fear and can send small transactions since there is no transaction fees ,which is more important .The recent rise is because there is some sort of collaboration with Microsoft ,that is what i heard about the recent price rise.Nothing wrong in holding a few coins,who knows what the next revolution would be.