Cyberbullying is a rapidly growing problem among school-age children. Current estimates indicate that 20% to 35% of children and adolescents report experiencing cyberbullying (Diamanduros, Downs, & Jenkins, 2008; Kowalski & Limber, 2007). Definitions of cyberbullying vary and no standard definition has yet been established. Hinduja and Patchin (2009) define cyberbullying as occurring "when someone repeatedly makes fun of another person online or repeatedly picks on another person through e-mail or text messages or when someone posts something online about another person that they don't like" (p. 48). Initial research is demonstrating that being a victim of cyberbullying may negatively impact physical, social, emotional, and cognitive functioning, development, and well-being (Hinduja & Patchin, 2008). Reporting periods, survey methodology, and the definition of cyberbullying vary across studies, which makes obtained findings difficult to compare and less generalizable. More systematic research needs to be conducted to clarify the causes and effects of cyberbullying on children and teens. This article presents four recent research articles devoted to cyberbullying.