According to this study by Common Sense Media, parents still aren't getting the message about keeping tabs on their child's online behavior. Especially when you read a statistic like: "13% of teens said they posted naked or semi-naked photos or videos of themselves. Only 2% of parents said their kids have done that." Wake up folks. That's more than 1 out of 10 kids. If your child has more than 9 friends, someone in that group is the culprit. Is it your kid?

Here's a sample of the new report's findings:

• 37% of teens said they used social networks to make fun of other students, but only 18% of parents believe their own angels do so.
• 13% of teens said they posted naked or semi-naked photos or videos of themselves. Only 2% of parents said their kids have done that.
• 24% of teens said they signed on to someone else's account without permission, while only 4% of parents said their kids have done that.
• 28% of teens posted personal information that they normally would not have revealed in public, but 16% of parents said their kids did that.
• 23% of teens downloaded or shared files illegally, while only 10% of parents believed their child was a thief
• 18% of teens pretended to be an adult while on a social networking site, but only 8% of parents thought their kids were imposters.