Great for when you would like to hide an admin menu from a user so that they will not accidentally click the menu item.
Sometimes you have users with admin rights that you do not want clicking on certain menu items such as pages, posts, settings etc.
There is even an option to hide this plugin from all users so they can't change their own "permissions".
Please note that if the user is savvy enough to enter in the url such as (http://yoursite.com/wp-admin/edit.php?post_type=page for pages) Then they will be able to go there. This plugin is mainly to hide the menu items form inexperienced users that you do not want in certain menus either because it will confuse them or because you just do not want them there.