I think that's the real question. In an era where alot of people do not listen to traditional radio, a service like pandora helps artists get heard by people who did not go specifically looking to listen to 'Happy'. if even 10 percent of listeners heard the song first from pandora, that's 4.3 million potential new fans who buy CD's or tracks from iTunes and PlayStore. Unless Pharel is living in a van down by the river, he should be thanking the stars he wrote a hit that got listened to by 43 million times on a single service alone.