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