sozzled wrote:
(2) As far as Kunena is concerned, I don't understand the question about a User Profile plugin. What plugin is this? Who wrote it and what is it used for?
Kunena doesn't have its own registration form, so it uses default Joomla or Community Builder registration and then synchronizes the users.
Now, in Joomla 1.6 and 1.7 version there is a new plugin which comes with Joomla installation by default.
docs.joomla.org/Creating_a_profile_plugin
We can add some specific profile fields by enabling this plugin on joomla registration page.
Kunena Profile has
User Account tab in
edit profile which can include above fields and synchronized with User Profile Plugin.