Hi guys, we have just released a simple plugin which puts registrants into Joomla usergroups directly so you can use the Joomla ACL to assign modules / categories etc. It's available for a small fee here: www.joomapp.com/extensions/usergroup-mapper-jomsoc…
UserGroup Mapper Jomsocial
JoomAPP provides great Joomla solutions like Multi user profile plugin, Mass user creation import and jreviews iOS & Android APPs.