A survey of adolescents (N = 1,488) documented third-person perception (TPP) regarding Facebook use and cyber bullying. As Facebook establishes itself as the dominant social network, users expose themselves to a level of bullying not possible in the analog world. The study found that 84% of adolescents (middle school through college undergraduates) use Facebook, and that most users log on daily. While 30% of the sample reported being cyber bullied, only 12.5% quit using the site, and only 18% told a parent or school official. Despite heavy use and exposure, adolescents exhibit TPP, believing others are more likely to be negatively affected by Facebook use. The study contributes to the TPP literature, by linking the perceptual bias to self-protective behaviors. A range of self-protective behaviors from precautionary (deleting or blocking abusive users) to reactionary (quitting Facebook) were related to decreased degrees of TPP. TPP was also related to optimistic bias, experience, liking of and use of Facebook, and perceived subjective norms and age. Implications for prevention education are discussed.