Two papers I helped author were accepted to the 2017 ACM Conference on Human Factors in Computing Systems (CHI). The first paper (which I led) explores ways that contributor freedom in a geographic peer production community, OpenStreetMap, has negative effects on data quality. I could not have completed the study without the help of fellow collaborators Sarah McRoberts, Jacob Thebault-Spieker, Allen Lin, Shilad Sen, Brent Hecht, and Loren Terveen. In the second paper, I helped investigate the “Story” feature on Snapchat. I was fortunate to work with co-researchers Sarah McRoberts, Haiwei Ma, and Lana Yarosh for that project.