After the Social Capital Markets 2008 conference (Socap08), we are trying to keep the discussion going:
Official Socap sites:
LinkedIn group: http://www.linkedin.com/groups?gid=695957
Facebook: http://www.facebook.com/group.php?gid=21564834773
Socap08 Wiki: http://socapmarkets.pbwiki.com/
Other sites
Social Capital Network: http://www.socialcapitalnetwork.com