Book excerpt: On the popular microblogging site Twitter, teens and others can broadcast their voices around the world in 140-character tweets. They can get updates on breaking news and connect with peers, like-minded strangers, and even their favorite celebrities. However, many of Twitter's advantages can also make it dangerous for unsuspecting teens. This title raises readers' awareness of the potential pitfalls of Twitter and explains what they need to know to use Twitter safely and enjoyably. Engaging photos, myths and facts, and questions for an Internet security expert enhance the clear text.