Take this simple test and check out if your social media usage pattern have turned you into a narcissist.
What is Narcissism? (Wikipedia Definition)
Narcissism is a term that originated with Narcissus in Greek mythology who fell in love with his own image reflected in a pool of water. Currently it is used to describe the pursuit of gratification from vanity, or egotistic admiration of one's own physical or mental attributes, that derive from arrogant pride.
If we look at the nature of updates/tweets , pictures we get on our social profiles, we can easily make out that majority of them would be posted for the purpose of self-gratification and exhibitionism.