I remember having a conversation with my friend some 15 years ago when FB only allow .edu accounts. I argued that the incentives for the company cannot be to connect people because that in itself isn't profitable. I signed up maybe 10 years ago for 6 months or so and never tried again. I think this has isolated me in some ways, but I'm quite comfortable with the friends I currently have.
Hypothesis: people who regularly use social media score higher then the average population in narcissic personality trait.