I believe Ethereum is the next best cryptocurrency after Bitcoin. Ethereum would one day overtake Bitcoin, so hold Ethereum for five years and it would definitely make you rich in future.
Not really but since its one of the cheapest, its a good thing to have some stash of it just incase its price turned out to be more than $0.10 in the coming months, its going to be a big profit for you. I have invested just about $400 for it but never get to dump it. If the mobile mining is really possible, those who decided to buy ETN will really be a lucky as me.