Citing research from AppData, it notes that the monthly active user count for Spotify's Facebook app base "massively boosted" as a result of feeding listened song titles into Facebook users'
timelines. Also , Slacker's new daily online listeners have nearly tripled, the music service tells paidContent, adding: "Our Facebook fan page has more than doubled -- in large part, due to the
(Facebook app) promo."
The Guardian, on the other hand, tells paidContent: "It's too early to know but, since launch, the app has been installed by 129,000 Facebook users, who have generated over 611,000 story clicks."