The Flat File PHP Guestbook is designed to be lightweight, easy on the server, and simple to install, whilst still providing a number of important features! The script should run on any server with PHP 4+! Features include: Automatic Email notification of new comments (can be enabled or disabled) Easy to set up and run (just change the username and password for the admin area and upload the files!) Support for smilies (with a few basic ones included) Comments can require Administrator approval Comments can require a valid email address Optionally allow the user to post their own website address