CAcert.org Site Stamp HOWTO!
The CAcert Site Stamp Programme is a very useful tool for site owners everywhere, it allows you yet another option to prevent people from stealing your content or making a fake site to pretend to be your site to carry out a phishing attack against your customers.
To add the CAcert logo to your site you need to register for a CAcert server certificate, then add the following line somewhere on your website:
<script type="text/javascript" src="http<? if($_SERVER['HTTPS']=="on") { echo "s"; } ?>://stamp.cacert.org/showlogo.php"></script>