From Scientific American 2010-10:
…discovered narcissists and people with lower self-esteem were more likely to spend more han an hour a day on Facebook and were more prone to post self-promotional photos (striking a pose or using Photoshop, for example). Narcissists were also more likely to
showcase themselves through status updates (using phrases like “I’m so glamor-
ous I bleed glitter”) and wall activity (posting self-serving links like “My Celebrity Look-alikes”).
Can we assume the reverse?