Facebook has some unique aspects that make it an especially rugged social landscape for teens to navigate, according to Dr. Gwenn O'Keeffe, a pediatrician and lead author of American Academy of Pediatrics' social media guidelines. Check out the group's report, "."

"For some teens and tweens, social media is the primary way they interact socially, rather than at the mall or a friend's house," O'Keeffe says. "A large part of this generation's social and emotional development is occurring while on the Internet and on cell phones. Parents need to understand these technologies so they can relate to their children's online world--and comfortably parent in that world."

The Internet has always been full of judgmental idiots, and Facebook is no different. It's common among teens to post snotty or rude messages on the walls of people they don't like, for example.

I have no doubt that Facebook pages make many teens feel worse than they normally would anyway.