“Seven Criteria for Evaluation Open Source Content Management Systems” by Abhijeet Chavan: linuxjournal.com/article/8301
Drupal: drupal.org
Drupal Features: drupal.org/features
Drupal Modules: drupal.org/project/Modules
Planet Drupal: drupal.org/planet
Drupal Podcast: lullabot.com/podcast
Planetizen: www.planetizen.com
CivicSpace: civicspacelabs.org
CiviCRM: www.openngo.org
DrupalEd (Drupal for Education): drupaled.org
Drupal for Artists and Musicians: www.drupalart.org
Wikipedia: Drupal: en.wikipedia.org/wiki/Drupal