Joomla the famous CMS derivated from Mambo is one of the most widely used CMS out there. Next to Drupal, Plone, PHP-Nuke Joomla has widely spread across the web development.
Php Pro has an interview with Mitch Pirtle who is a core development of CMS.
Interview with Joomla Developer
Moderators: snarkout, Patrick, dann
Interview with Joomla Developer
Alexandro COLORADO