This module provides an API for users to gain or lose points for performing certain actions on your site.
In conjunction with other modules, such as the Userpoints Nodes and Comments users can accumulate points for actions such as posting nodes, commenting or moderation duties.
Use one of the many contributed modules to extend the functionality of the module to include point accumulation on page views or votes, upgrade roles based on point balance, or purchase goods from your store.
This module is useful in providing an incentive for users to participate in the site, and be more active.
Userpoints is included in the Drupal Commons distribution.