Online social networks will be today's theme at the Berkman Center.  John Clippinger, our newest Berkman Fellow and a veteran scholar on this subject, will give a lunch presentation about his recent work on design, trust, and authentication in building new platforms for social networks (RSVP required -- see luncheon series for details).  More discussion will follow in an afternoon Fellows Meeting.  And new Berkman Briefing on social networks has just been released today -- Interacting at Interactive examines what happens when online social networks meet in "real space" at SXSW Interactive in Austin, TX.  Read more.