After introducing a favorites tray to Home last month, Facebook is today following up with another critical app organization feature: folders. Those who've replaced Android's default launcher with Facebook's social-centric alternative can download the latest update from Google Play now. Creating folders with Home works just as you'd expect; simply drag one app on top of another to start a new one. Unfortunately, Facebook isn't yet expanding Home compatibility to any new handsets at this time. But the update also includes features for users of the regular Facebook app. News Feed stories can now easily be shared through private messages, and by popular demand, the app can now be stored on external SD media rather than being limited to your phone or tablet's built-in memory.