Sorry to double post on this, but I just wanted to point out that I originally go the Steam account when I purchased Half Life 2 when it was first released.

When I started up my own reviews website I contacted Doug Lombardi over at Valve who gave me the activation code to get the access I have now.

I did contact him when I closed the site down, but he informed me that it was not worth his time in closing the account as this meant filling in paperwork and explaining why it needed to be closed etc.

The site has been closed for over three years now, and the account still works.