I kind of disagree -- people I know use spotify in a fundamentally different way than they used radio in the past. They often put on a particular album or arti

I kind of disagree -- people I know use spotify in a fundamentally different way than they used radio in the past. They often put on a particular album or artist, and this interaction is much closer to how folk used a library of CDs in the past. No one used the radio that way, even if you could call up and request a particular song. In contrast, Pandora is much closer to radio in how people approach it. (You can use Spotify like that too, but at least among my friends its not the primary means of interaction.)