Due to the marked differences between Face-to-Face (FTF) and CMC interactions [1], the impression formation process between OSS participants, who use CMC, is different than the impression formation process between developers working in FTF settings. Because participants who rely on CMC are very task-focused [14], we hypothesize that the sociotechnical interactions (i.e. interactions between people using technologies in workplaces) in which OSS participants can judge their peers’ technical contributions (e.g. reviewing code changes, and interacting through bug repositories to resolve bugs) should greatly influence peer impression formation.