Motivational Effects of Badge Systems on Participation in Stack Exchange Social Q&A Online Community. - Xu Meng; Sarah A. Webster; Brian S. Butler (AMCIS, 2013)

Learning to be a better q'er in social Q&A sites: Social norms and information artifacts. - June Ahn; Brian S. Butler; Cindy Weng; Sarah A. Webster (ASIST, 2013)

Understanding Participation and Persistence in Online Peer-To-Peer Learning. - Sarah A. Webster; Alisha Alam; June Ahn; Brian S. Butler (CSCL (2), 2013)

Open Education in the Wild: The Dynamics of Course Production in the Peer 2 Peer University. - June Ahn; Sarah A. Webster; Brian S. Butler (CSCW, 2015)