If i am not mistaken we cannot sign up for username which contains neither **google**gmail.com nor **gmail**gmail.com. It so happen that yourgmailusername (AT) gmail (DOT) com is a valid gmail address.

I GUESS this page is belong to Google.
http://yourgmailusername.googlepages.com/

Added... Spotted this via http://www.google.vc

If you are right... And we can't make those usernames.... And if Google made it themselves.... Then that is utterly hilarious.

Sam Davyson,

I send gmail invite to myself and try all the **gmail** / **google** username on the Desired Login Name: and check for the availability. It shows "not available".

Hope this helps. :)