The relation between online and in-person social support was curvilinear. Social media was a less redundant source of social support for people with low levels of in-person social support. Social media was a relatively redundant source for people with high levels of in-person social support. Online and in-person social support evinced incremental advantages over and above the other. Online and in-person social support both ameliorated the pernicious effects of peer victimization.