Specifically, we hypothesize that peer code review is the sociotechnical interaction in which developers interact most directly and should therefore serve to best support peer impression formation. To test that hypothesis, we conducted a large survey of code review participants in OSS projects. The objective of the survey was to understand: 1) the OSS code review process, 2) expectations of the code review process, and 3) how code review impacts peer impression formation. This paper describes partial results of that survey that focus on the third objective.