Would radio be a good indicator of what people are actually listening to, though? All that would tell you is what the station is playing, not how many people ar

Would radio be a good indicator of what people are actually listening to, though? All that would tell you is what the station is playing, not how many people are listening. Plus, stations have their own motives to play (or not play) what they do. From what I've seen if people don't have access to their "own" media (be it a Spotify subscription, iTunes, loose MP3, CDs, whatever) and they want to listen to a song, YouTube is where they go.