I think the biggest impact social media has had, is making PEOPLE -feel- like they are empowered enough to make a difference. — Kristen McHugh
People who are more emotionally stable will use social media less frequently.

Cracked.com

Oh, and they -are- serious about this. In case citation is needed, it is from academic journal: Computers in Human Behavior, Vol. 26 (2010), pp. 247-253