This component allows you to administer totally separate multiple joomla installations from one joomla site. Any users added to your joomla site will be automatically added to all your other sites. Any changes made to users or deletion of users on your site will be reflected across all your other sites. Please note that this component was developed quickly to take care of my problem of administering 10+ joomla installations. If you are in a similar situation, this component is perfect for you. This component has only been tested locally and on my server, so use at your own risk. I would love to get feedback and/or testing from other people. Be sure to take a look at the README.