A SSL certificate has now been added to my site. It just means that the connection is encrypted, so no one can intercept what is sent between the server and the recipient. It's actually a bit unnecessary on a site like this, but a certificate at this level is free from my ISP. That way, you don't get a message that the connection is insecure. And best of all, you get a cool, green padlock in the address bar. Fancy!