There's a whole big list of useful things it does, check out emercoin.com and you can see some of its utility.
Thanks craslovell, I have invested in EMC and it seems very good project by reading the link you sent me but I would like to understand why EMC has not increased in price as Ethereum has done as both partnered with Microsoft and there are less EMC coins than Ethereum and the value of Ethereum is 50 higher why? do you thiknk EMC will reach the same value? thanks
Personally I couldn't say what the price will reach, that is pure speculation. I think part of the problem is that EMC has been overlooked. It simply does not have the hype of other coins, despite being incredibly useful. This is something that is being worked on at the moment as far as I know, with some great projects in the works.
I'd love to say it will reach the price ETH is at now, but that all depends on community involvement and participation. When people see the real value of the coin, I think you will see the price increase you are looking for.