Proceedings of the 18th ACM Conference Companion on Computer Supported Cooperative Work & Social Computing

The CSCW community continues to grow. This year we received 575 papers which represents a 13% increase over the total submissions for the prior year. We had submissions from 24 countries covering all continents. This year was the fourth year of the \"Revise and Resubmit\" (R&R) process. Over the last four years the CSCW conference community has been conducting the review process in two rounds. In the first round reviewers are encouraged to review papers with an eye to improving the intellectual strength and contributions of the paper, making it clear which changes would be helpful and which are likely required to make the paper acceptable. In the second round, the same reviewers see the same paper and review to understand whether or not the revised paper now meets the standards of the CSCW community as acceptable. This two-round review model, with encouraging and intellectual give-andtake, is designed to improve papers of good quality but in need of work that might otherwise slip just below the bar in the more common one-shot reviewing conferences. As the Papers Co-Chairs we received numerous email commenting on the high quality of the reviewing, even from some authors whose work was not accepted. Of all the submissions, 262 were offered the opportunity to R&R, representing a little over 45% of the original submissions. A very small number of authors either withdrew their papers or otherwise declined to resubmit their papers. The Program Committee accepted 161 papers for an acceptance rate of 28% of the total.