Young people share a lot of personal information online without realizing that everything they post is recorded and can have negative consequences. The document discusses several examples of things students should avoid posting on social media, such as complaining about teachers when their personal issues came up or sharing details about illegal activities. It also warns about the dangers of cyberbullying and making threats online, citing the example of a boy who was arrested for threatening violence. The document advises students to be careful what private information and feelings they share, and to follow school guidelines about appropriate online behavior to stay safe.