The summary points out that "Cyberbullying is widespread among today's teens, with over one-third having experienced it, engaged in it, or known of friends who have who have done either." But that one-third is cumulative of bullies, people who have been bullied and even people who know someone who's been bullied.

20 percent of teens "say they have sent/posted nude or semi-nude pictures or video of themselves." But the data from the Cox survey showed that while 20 percent of teens "have engaged in sexting," that number, too, is cumulative. Only 9 percent "sent a sext," while 17 percent received one, and 3 percent forwarded a "sext."

it's important for parents to talk with their teens about appropriate use of the Internet. Don't scare them or shut down their use, but do remind them to mind their manners, think before they post, and seek help if someone is bullying or harassing them.