The ACM Conference on Computer Supported Cooperative Work (CSCW) is a premier venue for presenting research in the design and use of technologies that affect groups, organizations, and communities. CSCW encompasses both the technical and social challenges encountered when supporting collaboration. The development and application of new technologies continues to enable new ways of working together and coordinating activities. Although work is an area of focus, CSCW embraces research and technologies supporting a wide range of recreational and social activities using a diverse range of devices. The conference brings together top researchers and practitioners from academia and industry who are interested in both technical and social aspects of collaboration.