Internet researcher Michele Ybarra says one in four teens are cyberbullies, and that 6 percent of them harass or bully others online frequently. I've never thought of myself to be a Pollyanna, but that seems high to me. Maybe that's because other research indicates that online bullies are not casting a wide net for targets. Based on two other surveys, somewhere between 76 percent and 91 percent of teens say they have not been harassed, meaning somewhere between 1 in 4 and 1 in 10 teens are on the receiving end of mean, hurtful comments and actions online.

Ybarra developed a web site designed to help teens and parents deal with online harassment: Cyberbullies411.org. According to info on the web site, cyberbullying is defined as "threats or other offensive behavior sent online to a victim or posted online about the person for others to see. It can take place on social networking sites, or in the form of instant messages and/or emails.

Working through the the Crimes Against Children Research Center at the University of New Hampshire, Ybarra's researchers talked to 1,500 teens. Digging deeper, they found that teens who owned up to cyberbullying have poor relationships with their parents.