So this site now supports OpenID logons. Personally I hardly see the point, but it works. So once you create an OpenID at any one of many free public providers, just use your OpenID URL as username and login.
(Although.. the question remains as to WHY you would want to log into this site...)
Anyways, the public provider I used is https://pip.verisignlabs.com/
It was fairly quick and easy to setup, and now I can use this id to sign onto any site that supports it. One username and password to rule them all and in the darkness bind them.