How facebook can tell about your behaviour.

Lately I have been observing how people use facebook and it revealed  subtle things about their behavior.How much time they spend on facebook can help us to know about their nature
Let us analyse it.

• Friend A: A comes from office late night and the first thing he does is log in into his facebook account. He checks each and every update on his time line and scrolls down for almost 20 mins. Quite keen to know what is going on in others life. But he rarely puts any update from his side. So he is a kind of guy who wants to know what others are doing, but never want to reveal what he is up to.
• Friend B: B puts everything on facebook, from lunch in Taj to feeling sad, from playing in ground to working in office. Posts a hell of photograph on facebook and is always interested in knowing who all are following him/her. He/she has become narcissist, who wants to be liked, wants to seek attention and wants to become favorite. Whatever they do, it always has one thread attached to facebook , for ex, Click my photograph while I am riding on horse so that I can share it with my friends on facebook. Moreover they find happiness only when people appreciate what they are doing. And in this race they just become an object to please others. 
• Friend C: He is a kind of person who lies in between Friend A and Friend B. He daily checks updates of  others  and is always tagged by friends like B(As B needs followers to prove that they are doing something extraordinary). And they are happy being in the parachute of B with getting a little limelight. So they are kind of people who feel that whatever you have be happy with it.
• Friend D: Now this is totally different class of people , who are bored of facebook and rarely check it. They know it that it is all crap and when only something important is there like advertising about their new startup, event, or invitation for any meeting. So they are trend setter people who actually make changes.
• Friend E: these are extreme of Friend D, who have deactivated their account and don't feel like using facebook for anything. They have done all the things they wanted to do with facebook. Friend D and E actually have lots of time to do things for themselves. They know what actually reality is and how to be happy in life. Keeping yourself busy in some productive work instead of whiling time away on facebook.