I am one of the co-founders of Clickpass and I think this is a great move.
I wrote the HN code in about 2 days and I was learning lisp/arc so it was awful code (RTM did the openID part) and literally no one has touched Clickpass code for 2.5 years. The fact that it still works is always surprising to me :).
Also I think Oauth beat OpenID hands down.