Low self-esteem? Get off Facebook!

When logged in, you upload, comment and poke your friends. But how does that relate to your personality? Researchers poked at that question in a study, and found that narcissistic types with low self-esteem spend more time on Facebook than others—not surprisingly, “self-promoting.” Yes, connecting socially is a beauty booster, but only when it’s not so self-focused.

MORE: Boosting Your Self-Esteem