Here is an absolutely free guestbook service that you can either integrate in your website or use it as a place for discussion. Along with the free guestbook, you benefit from getting a control panel to manage your guestbook, can have the messages up to 3000 characters that can be changed as per your choice. You can block unwanted messages or those from a particular IP address. Guest books are hosted on professional servers that can be located in a fast and reliable network.