The disadvantages of facebook are makes weak eyesight. People who access facebook will feel enjoy and waste much time in front of the monitor, moreover when they chat with their friend, they will forget to do anything else, eventhough just for blink their eyes. If it happen continually can make their eyes red, and feel tired. Actually blink the eyes can make refresh our eyes, but if people forget to do it can make the bad effect like their eyes will dry and feel tired. The other side, when people access facebook too long it can make eyes radiation. It is also become dangerous problem in our healthy. Because the effect of radiation not only can make eyes tired but also can make cataract and other dangerous effect. So, to reduce the eyes radiation people should keep their eyes by consume vitamin A and always washing their face after using computer.
The next disadvantage of using facebook