2 years ago in a survey taken by Ohio State University proved that students who don’t use Facebook much had GPAs between 3.5 to 4.0 and on other hand Facebook addicted students got GPAs ranged between 3.0 to 3.5 and some are even lower.
And in my opinion Facebook addicted students are not among popular students who take part in sports and in other College/University events. Only they care about is how to party and get drunk in wild ways.
Here is a video also show how using facebook makes you dumb and stupid. Please share it with your Facebook addicted friends and convince them to delete their profiles or at least tell them not to use facebook often.