It is our great pleasure to welcome you to this issue of the Proceedings of the ACM on Human Computer Interaction, the second to focus on the contributions from the research community Computer-Supported Cooperative Work and Social Computing (CSCW).
This journal model allows for rapid publication of papers shortly after acceptance as well as enabling automatic indexing services, such as Institute for Scientific Information (ISI) indexing. The aim is to increase the visibility of the work of authors in this community, and allow for better comparability with fields outside of Computer Science.
This issue contains papers accepted over two iterations of the review process. The call for papers for this second issue, with an initial deadline in Spring 2018, attracted 722 submissions, from all around the world. After the first round of reviewing, 326 (45,2%) papers were invited to the Revise and Resubmit phase. The program committee worked hard over August 2018 to arrive at final decisions, with an online editorial committee meeting held to allow for collective deliberation. In the end, 184 papers (25,5%) were accepted.
For some of those papers, authors received further shepherding and guidance by a senior committee member. This shows the commitment of the CSCW community to not only ensure high quality contributions, but also to educate and enable authors to write and present their best work for this community. This issue exists because of the dedicated volunteer effort of 132 senior editorial committee members who served as Associate Chairs (ACs), and 837 external expert reviewers to ensure high quality and insightful reviews for all papers in both rounds.