If you use Facebook for a long time, you may have headaches, pain in the eye or misused, such as remove feint to Facebook, which makes the person others damaged, it is considered as a disadvantage of Facebook.
If you use Facebook for a long time, you may have a headache. Eye strain or abuse. Like a scene to deceive others, which makes them corrupt. It is considered the disadvantages of Facebook.
If you use Facebook for a long time, you may have a headache. Pain, or use the wrong way. Such as take Facebook to deceive others, which makes the person damage. It is considered a disadvantage of Facebook.