After my endless search for Pligg’s integration with Joomla,i have find This plugin can integrate Pligg with joomla!This plugin will sync Joomla 1.5 and Pligg 9.9 login with ease. Note : CB is not required for this plugin to work This plugin will allow you to run Pligg inside Joomla using Wrapper. It will sync user registration, login and forgot password between Joomla, CB and Pligg
Use at your own risk! Backup first or use in test environment first.