The document discusses teenagers' use of social media and the internet. It notes that 61% of teens aged 13-17 have personal profiles on sites like MySpace and Facebook, and half have posted photos of themselves online. Many teens, especially older ones and girls, use the internet for social interaction and networking. However, the document also notes potential risks, with 71% of teens receiving messages from strangers and 45% being asked for personal information by strangers online. It provides tips for parents to help manage their children's internet use safely.