This is a complete application that you can use to let your visitors leave they thoughts about web pages or interact with you asking questions or giving suggestions .It may be installed on multiple pages It's got a good anti-spam protection with the captcha verification code.Plus a protection against bad words and words too long and it checks for valid URL This version provides the approval of the comment prior publication. From the Admin page you may approve or cancel any comment, ban an IP Address and add bad words that you don't want to appear on the comments it works on web pages with extension .php Also works on .htm .html extensions if your host have enabled the web server to recognize php code with these files extensions.And also is free