Facebook renews search for elusive younger users with Lifestage

Facebook is again trying to tackle one of its biggest problems and lure in elusive younger users.
The social networking giant has released a new stand-alone app, called Lifestage, for iOS devices. It's focused on enabling young users to share videos with other people in their schools.
Think of it as a video version of a very early stage Facebook -- and a direct competitor to Snapchat.
The app, which is still in the testing stages and isn't yet available on Android, has one big caveat: You have