Abstract
It is our great pleasure to introduce this issue of the Proceedings of the ACM on Human-Computer Interaction, which focuses on contributions from the research community on Supporting Group Work (GROUP). This thriving community is home to researchers within CSCW, HCI for practice-centered computing, sociotechnical studies, and interdisciplinary groups who provide theoretical, methodological, and/or conceptual contributions on collaborative technologies and practices. GROUP's research community vividly raises the awareness of dimensions of growing importance in our highly connected life, as exemplified by the papers included in this issue. Information sharing and moderation in and across groups and formal organisations continue to call for complex research questions. Collaborative practices that have been the object of concern in GROUP become revisited through the lenses of new technologies, as illustrated by the papers investigating recommender systems and conversational agents in collaborative contexts. More than ever, the Internet is acknowledged as a space for social relationships, see for instance the case of dating apps or mom's chat group in this issue. Reflecting on our densely computing supported practices, ethics for research and design become an essential topic for consideration. The editorial board worked hard to organize this first submission round.
The call for papers for this issue on GROUP attracted a total of 31 submissions from all over the world, of which 8 papers (25.8 %) were accepted. This issue results from the dedicated volunteer effort of 23 members of the community who served as Associate Chairs (ACs). They all lent their expertise and time to provide insightful feedback to all authors. The Editorial Board can be found on GROUP's track page. As Track Chairs, we are grateful for the community's collective efforts to continue shaping and sharing GROUP's contributions.