Capturing a screen of your iPad into an image can be quite useful sometimes, without that option, making this tutorial would not be as simple as it was.
If you are using Facebook social apps for watching videos, reading content and you don't want your friends or everyone to know about your activity, you can turn this off.
The new iOS 7 comes with an interesting moving background motion or a so called Parallax Effect when you physically move your device about. Let me show you how to turn it off to improve battery life.