iTunes radio has been out less than a year but has quickly risen in market share against existing streaming music services. I used to switch between Pandora and Spotify, but the later has been replaced by iTunes radio. For me, Spotify’s discover function is terrible, but I’ve enjoyed the mix on iTunes radio. In fact, I would say that most of my streaming listening is currently going to iTunes, with only about 20% going to Pandora. What do you use?