You can set your server to respond to both, and should. I love when I can hit two different web pages on the same URL based on whether or not I included the 'w

You can set your server to respond to both, and should. I love when I can hit two different web pages on the same URL based on whether or not I included the 'www'. This is a sign of a poor IT setup. When you spell it out over the phone, you should include the http:// http://, though. (Haha! It's also useless!)