Someone else posted this: http://hnlike.com/hncharts/chart/?id=7791612 which is a useful comparison. Looks like AWS still has the top spot, but what's impressive is how quickly digital ocean has risen to prominence. At the time of writing it's number 2. I use it myself and couldn't be happier with it. Easily one of the easiest to use hosting providers I've used and the technical articles on their site are great as well.