AlphaUserPoints

The first Referral User Points System for Joomla 1.5 ! With AlphaUserPoints component, you can distribute, assign or remove points to registered users according to some of its actions and activities on your website. AlphaUserPoints acts as an incentive promoting participation of users. Users often strive for more recognition, as well as competition. It's also usefull for contest, challenge, participation, game or online store! This component has its own component for invite which can also be used by non-registered users (based on AlphaRecommend). Building easily communities using AlphaUserPoints! Feature list: Easy to use Administration interface like Joomla! - 17 pre-existing rules - Possibility expire date for rules (usefull for campaigns) - Auto-approve system - Invite/recommend system integrated - Change user level by system points - Statistics per user - Details actions per user - Sync. users - Recalculate function - Reset all points function - Max points for winners - Purge expires points - Exclude users (usefull for admins) - Export active users (CSV) - Export e-mails (CSV) - 4 menus available on frontend - Support third plugins - Provide API for third components - Language support - Support Joomla! 1.5 core SEF - Easy install by one step - MVC developement

Original Source: Joomla! Extensions Directory