Spotify their favourite artists, as well as music, review, and concert recommendations based on listening history. Users can add all tracks to a "Collection" section of the app, rather than adding to a specific playlist. The features were announced by CEO Daniel Ek at a press conference, with Ek stating that a common user complaint about the service was that "Spotify is great when you know what music you want to listen to, but not when you don't", adding that "20,000" new songs got added to the service on a daily basis. "You're fighting with 20 million songs on Spotify", Ek
Slacker Astronomy Science Center. Slacker Astronomy peaked at #4 in the top 10 "Science & Medicine" podcasts in iTunes Store in January, 2006 and at the time reported 13,000 unique weekly listeners. Its most popular show was downloaded by approximately 36,000 unique IPs after being featured on the frontpage of Slashdot on May 17, 2007. In addition to the weekly 5-10 minute show, there was another feed called Slacker Astronomy Extra where they published longer and unscripted shows, interviews and sound-seeing tours. The name 'Slacker Astronomy' was a trial name, and was meant to change early on in production but just stayed