Mostly I used ethereum in myetherwallet to get some gas for transaction fee from the tokens that I got from some airdrops, bounties ad especially signature campaign . This altcoins are very popular because it is the 1st crypto currency that always used in crypto worlds(a months ago sorry for the disclaimer) . If you are ethereum dont worry if the price is dumping , I think there is a good chance Ethereum will be $500 by the beginning of 2018.