With the advent of smartphones and the popularization of social media sites at the beginning of the twenty-first century, children and adolescents have been exposed to a world of virtual interactions in social networking sites that are designed to increase engagement of the user for profit. In this article, we review the epidemiology of use of social media, its addictive features, and potential negative consequences of problematic use, and the research on current interventions known to reduce use. We also give recommendations spanning from the policy to the individual level for children to build a healthier relationship with these sites.