What I say about bitcoin is a great internet job and it's a good idea for satoshi nakamoto because instead of going to the internet and you are playing the video games. but now you have earned money so it is so nice bitcoin in every way for teenagers because they have a side line when they bitcoin. I believe Bitcoin and many other cryptocurrencies are in a price bubble in late 2017. Prices could streak higher or collapse, or both. I have no firm opinion except that I know bubbles crash.