The ACM Conference on Computer Supported Cooperative Work and Social Media 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. CSCW 2012 will be held February 11-15, 2012, in Seattle, Washington, USA. The deadline for Papers & Notes submission is June 3; titles and abstracts of Papers & Notes must be submitted by May 27. The early submission date of June 3 reflects a new review process, wherein authors of promising submissions will be given a month to revise their 10-page Papers and/or 4-page Notes to address concerns raised by reviewers and increase their potential for achieving the level of clear contribution required for a CSCW Paper or Note. We have instituted this process to promote greater diversity while maintaining the high level of quality expected of CSCW Papers and Notes. Only complete submissions will be reviewed, and not all submissions will be eligible for revision, but we hope that the opportunity for revision in some cases may help prospective authors from outside the traditional CSCW community to structure the presentation of their work in a format that is better aligned with CSCW standards. The complete Call for Participation, including information about Workshops, CSCW Horizon, Demonstrations, Panels, Posters, Videos, the Doctoral Colloquium, and Student Volunteers - as well as Papers and Notes - can be found at cscw2012.org <http://cscw2012.org>. You can also follow announcements about the conference on Twitter, @ACM_CSCW2012 <http://twitter.com/acm_cscw2012>, and/or "like" us on Facebook, www.facebook.com/CSCW2012 <http://www.facebook.com/CSCW2012> We look forward to your participation! *The CSCW 2012 Committee * *Conference Co-chairs *Steve Poltrock Carla Simone, /University of Milano-Bicocca/ *Treasurer *Stephen Hayne, /Colorado State University/ *Papers & Notes Co-chairs *John Riedl, /University of Minnesota/ Gloria Mark, /University of California, Irvine/ Jonathan Grudin, /Microsoft Research/ -- *The 2012 ACM Conference on Computer Supported Cooperative Work and Social Media* 11-15 February 2012 Seattle, Washington, USA /Homepage/: http://cscw2012.org /Twitter/: @ACM_CSCW2012 <http://twitter.com/acm_cscw2012> /Facebook/: http://www.facebook.com/CSCW2012