As the name itself says, it filters out the content. It is a Joomla! plugin which filters the content of an article according to users' Joomla! usergroup. There are several cases when you want to show some content to particular type of users and want to hide some content from particular type of users. Content Filter plugin does exactly same as above mentioned. It filters the content of Joomla Article, K2 item or any other content which trigger the event "onContentPrepare". Currently it is tested with these two extensions only. We'll update the list of supported extensions as testing gets completed.