Users who interact with the site can be awarded points. With enough points accumulated, a user becomes a member of a particular user group. You can restrict access to certain modules to registered users only; but you can take this even further, and allow only members of a particular user group access to the module. In this way, you can reward users who frequently participate in your community with extra modules or content that only they can view.
Although user groups and subscribed users seem similar in the sense that you can restrict module access exclusively for them, there are a number of key differences:
Anyone can join a particular user group by participating in enough prize-winning activities on the site. Users can only be subscribed through the action of the super user.
Conversely, without going into PHP-Nuke's database, the super user cannot put a particular user into a user group; this is something that the user has to earn.
Currently in PHP-Nuke we can restrict...