I have not used myetherwallet (MEW) before, until recently nwhen I was trying to transfer some of my bounty dragon coins to the ERC wallet of one of my friends so that he can help to sell them. I found it very easy to use after he had put me through for some minutes.
But recently I had about security loophole in using mew. I can't really say I'm scared, because I don't really know much about mew for now.