If you have kids, you probably know that Facebook is big among teens. This social networking site is becoming one of the main ways that young people communicate with each other online. But the problem is that if you want to use Facebook, you have to list info about yourself on a public page. This makes you a target for identity theft. A recent study found that nearly 50 percent of Facebook users put enough info -- things like birth date, hometown, family information and more -- to aid ID thieves. Kids don't understand the risks inherent in using some of this new social networking technology. It should be up to parents to educate themselves so they can have an intelligent discussion with their kids about the issue. Clark advises parents to sign up for their own accounts and figure out how these things work so they can safeguard their kids.