Didn't realize this existed, albeit with 3 or 4 posters.. Anyway,
http://www.di.fm/. The app I usually use when at work or on the road. Enough channels that just about any genre is covered.
I used to be well connected through my wife with the DJamer scene in Kansas City before we moved to the great white north, but I can still give word to any upcoming shows if anyone is in the KC area and interested. The scene has really taken off there in the last couple of years with a wider array of choices. Wouldn't mind seeing Galantis tomorrow.