I really think Pandora should start full on-demand music service for additional subscription fee instead of just being radio. Playlist creation and sharing is becoming huge but still in fancy from tech perspective. Lot of people are stuck on particular service just because of their carefully created playlists over long time. That generates significant sticky factor. I've personally paid Rhapsody subscription for couple of years without much using it just to keep my playlists alive. This in addition can massively help improve radio itself. Also it can eliminate all that nonsense of not allowing to skip unlimited number of tracks. In my opinion, Pandora still has best of the best radio service (although far from perfect) and if they can supplement that with huge catelogues like Google Music with family subscription, there would be one more reason to stay there.