Dear colleagues, We are pleased to announce that the Communities and Technologies 2007 conference program is now posted, and the conference registration system is now open. The conference includes 13 workshops on topics ranging from communities of practice in work settings, healthcare communities and technology, online social networks, digital cities, community informatics, research communities and technology, business communities, and techniques for visualizing and analyzing community data. The full list of workshops can be viewed at: http://ebusiness.tc.msu.edu/cct2007/page4.html Thirty competitively selected papers are organized into 10 sessions, with contributions from scholars worldwide. In addition, two panels are planned: one examining ICT use in everyday life, and a second exploring ethical issues raised by analyses of online communities. Three keynote sessions are featured, including Judith Donath, Director of the MIT Media Lab's Sociable Media Group, Rob Malda and Jeff Bates, the co-founders of Slashdot, and Marc Smith, Director of Microsoft's Community Technologies Group. A number of social events are planned as well to help strengthen the C&T research community. Please join us in East Lansing from June 28-30 for what is shaping up to be an excellent forum for sharing the latest research on communities and technologies. With best regards, Charles Steinfield, Brian Pentland, Mark Ackerman, and Noshir Contractor Conference Organizers Third International Conference on Communities and Technologies Michigan State University conference email: cct2007@msu.edu conference website: http://ebusiness.tc.msu.edu/cct2007/