This is the script I threw together for my Have You Seen... video 'Playing With Colour'. It adds a new page that shows the most liked posts on the board. The number of posts shown is controlled by an option in the Messages group that is inserted by the add-on. To install, unzip the attached file, copy the 'LikeReview' folder into the 'library' of your XenForo Directory, then install the add-on XML file using your XenForo admin control panel. The new page will then be available at /likes-review/ on your installation. This add-on is fairly basic, but it should give a good insight into how completely new pages can be created for XenForo. Note this is for demonstration purposes: it doesn't check post viewing permissions.