An observation about the WWW

[persia]

People may be getting lazy with their A records.

[persia]

When you set up the A records on your domain you can choose to set up any number of subdomains, including www.  Haven't any of you set up your own domains?

[persia]

When I setup my domains the "@" record always points to the ip address that hosts the domain.  So say you were using Godaddy, I wouldn't by say you were.  The A record would read something like
@, 68.178.232.100, 1hr

The @ means the domain itself.

Then I would set up a cname like this
www,@, 1hr

That means the alias www points to the A record, it's an alias for my site without the www.  Skip this step and the www points absolutely nowhere.

Now suppose I did something really funky and pointed the www to somewhere else, then it might work until that somewhere else stopped working.  This could simply be that you were developing in a subfolder and forgot to redirect www to the new site.  Happens all the time...