A new study finds that 54 percent of teens talk about behaviors such as sex, alcohol use, and violence on the social networking giant MySpace — presenting potential risks even if all they’re doing is talking, researchers said Monday.

The study looked at MySpace profiles of 500 people who identified themselves as 18-year-old males and females in the United States. References to risky behaviors included both words and photos, the authors said.

Full story: Study: Teens on MySpace mention sex, violence