Hi sunlust,
Did you get any joy ? This is what I need to do.
Anyone have experience of JUGA - Joomla User Group Access, JACL ?

GroupJive provides all registered Joomla! users the ability to create groups, join together with other users and generate content that is unique to their Group(s).

Are we saying Joomla will ignore these groups and let users see content from other groups ?

If this is not possible, doesn't it render the Social Networking claims invalid ?