In this alarming new study, Health Day News reports that 30% of American teenage girls meet up with people they've only met online. "Nearly a third of American teenage girls say that at some point they've met up with people with whom their only prior contact was online, new research reveals.
For more than a year, the study tracked online and offline activity among more than 250 girls aged 14 to 17 years and found that 30 percent followed online acquaintance with in-person contact, raising concerns about high-risk behavior that might ensue when teens make the leap from social networking into real-world encounters with strangers." MORE 
Do you monitor your teenage daughter's contacts?