Any Game Beta Testers here.. I need information

While Beta Testing Vista over a year, I hadn't connected with the Game Beta
site.

I just tried to log onto the Game Beta site which popped up a sign in then
an error that no such site exists.

If anyone knows what happened or maybe they changed the Site URL that I'm
not aware of, I'd be happy in hearing what they might have done.

I sent an Email message also to the Address that use to be used but it
bounced also.

Any information would be greatly appreaciated.. Thx