This week Facebook co-opts the best thing about Myspace pages — rapid music discovery — by prominently adding a “Listen” button to musician Pages right next to the Like button. When clicked, the artist’s jams will start to play in your most frequently used Facebook music streaming app such as Spotify or MOG. If you haven’t authenticated any music apps, Facebook will prompt you to set up the one that’s most popular with your friends, or around the world. Read the full story at TechCrunch