Facebook is in essence a way to keep your friends updated more quickly than with a phone call. It’s a way to share ideas, sites and apps you like directly. (Calling a friend and saying “go to www.slashdot.org” is DOING IT WRONG!). It’s also a broadcast tool. You’re not going to call *all* of your buddies to tell them something semi-trivial, right? Status updates provide a way to do this easily. Let’s say you want to tell people what music you like and how many times you listen to it. What better way than with Last.FM’s FB app?