Dear Colleagues, Only a couple of weeks remain for the early registration period for the Communities and Technologies 2007 conference, to be held June 28-30, 2007 at Michigan State University. Early registration ends on May 31st. A fantastic program has been assembled, with 30 outstanding papers, 13 workshops encompassing a range of methodologies and research topics, four keynote speakers who have made significant contributions both to research and practice, and three panel discussions about aspects of communities and technologies by leaders in the field. The conference also will feature the opportunity to explore an innovative online event/conference networking service designed to enhance discussions among participants (more information will be available soon on this). We have put together a social program that includes a dinner/reception at the historic Cowles House on the Michigan State campus as well as an evening dinner/reception at the Michigan Historical Museum. Early registration fees for the meeting are $400 for regular attendees (that is, non-students), and $100 for students. Registration at these rates includes participation in a workshop. Late registration begins on June 1st, with fees increasing to $450 for regular attendees, and $150 for students. The International Conference on Communities and Technologies has developed into one of the premier meetings for interdisciplinary exchanges related to the development, usage, and impacts of technology-supported communities. Please visit the conference web site (http://ebusiness.tc.msu.edu/cct2007/) for more detailed information. We hope to see you at C&T 2007. Charles Steinfield, Brian Pentland, Mark Ackerman and Nosh Contractor Conference Organizers