Users
- User. Users are the people who install and configure Drupal sites. Users don't necessarily contribute code but make valuable contributions by submitting bug reports or feature requests through the issues system (http://drupal.org/project/issues) and participating in the drupal.org forums (http://drupal.org/forums)
- End users. End users are generally the users of sites that have been set up for them. In general, end users do not use Drupal.org but the sites that Developers, Implementors and Users set up for them.