The attached munin-plugin is a quick hack for displaying the number of the currently logged in users. In order to work without modifications you’ll need a vBulletin based forum which supports either english or german language. And of course you’ll need the user statistics accessible on one of your forum pages (usually the index.php). If you wish to use this with another language or forum software you’ll need to modify the regular expressions.
Example:
RSS 2.0