- Jeremy P. Birnholtz, Luigina Ciolfi, Sharon Ding, Susan R. Fussell, Andrés Monroy-Hernández, Sean Munson, Irina Shklovski, Mor Naaman, editors, Companion Publication of the 2021 ACM Conference on Computer Supported Cooperative Work and Social Computing, CSCW 2021, Virtual Event, USA, October 23-27, 2021. ACM, 2021.