A link between the number of friends you have on facebook and the degree to which you are socially disruptive has beedn established by researchers.
People who scored highly on the Narcissistic Personality Inventory
questionnaire had more friends on Facebook, tagged themselves more often
and updated their newsfeeds more regularly.
Research also shows that young people are becoming more obsessed with self image and more likely to develop shallow friendships.
They also found out that narcissist change thier profile pictures more often and reacted more agressively to offensive comments made about them by others on facebook.
A number of studies have also linked narcissism with facebook use. Facebook habits of young people where studied and included self-absorption, vanity, superiority, and exhibitionistic tendencies. They are often associated with a need to be in the centre of attention and cannot stand being ignored.
The higher the number of friends you have on facebook the greater the tendency of exhibiting these characteristics and also the more likely you are to accept friend request from strangers.
They proposed the need for further research to establish the effects of facebook, whether it is beneficial or harmful.
"If Facebook is to be a place where people go to repair their damaged
ego and seek social support, it is vitally important to discover the
potentially negative communication one might find on Facebook and the
kinds of people likely to engage in them.
"Ideally, people will engage in pro-social Facebooking rather than anti-social me-booking."