Annotation: "Nearly 75 percent of the U.S. population uses social media. For students, it is often considered a lifeline to connecting with their peers and staying relevant. But there's a dark side as well. How much social media use is healthy? What happens when trolls take over? Where do you go for help? Readers will learn to understand the pros and cons of social media and how to make smart decisions about managing their online presence"-Provided by publisher.