This is a special add-on and specially fitted with some specific groups. When users or guests click on any links in the site, they must confirm they have read the forum rules firstly. Users could load and observe the threads/forums/posts if they have accepted that they have read the forum rules. This will be effective for some content of age limit or post with sensitive content. For example, users or guests must confirm that they are older than 18 years old to be unhidden for those posts/threads.