You can suppress the display of the sidebar from anonymous and un-logged-in users on your MediaWiki website. This can be done by creating a new PHP file in extensions folder then including the code in LocalSettings.php file.
Site Notice After hook is one common way to display advertisements on MediaWiki Website. It allows you to place your ad code directly below the site-notice and above the page header. In this lesson we gave hand picked some other MediaWiki extensions that can be used for displaying ads on any MediaWiki website.
You can display a gallery of all images from a category in your MediaWiki website. Category Gallery is a MediaWiki extension that implements tag to automatically generate a gallery of all images in specified category.
In addition to talk pages which are associated on every MediaWiki article, you can add a chat tab to enable live discussion and communication between users.
With Chat extension on your MediaWiki installation, you may either add a Chat tab to every wiki Article or configure it to have only one chatroom across all articles, rather than default i.e. one chatroom per article.
A private MediaWiki website restricts editing of all pages whereas a traditional MediaWiki installation allows everyone to edit pages, even anonymous users. In this lesson you will learn about a special technique of proving edit right to users on selective pages.