"But with the UX failures of OpenID ..."
I see this often, and I don't get it. I go to a site that accepts OpenID and click the button. If I'm already signed in to OpenID, I'm in. If not, my OpenID provider's page pops up, I sign in, and I'm in.
Are other OpenID experiences not that simple, or am I so out of touch that I don't recognize that "OpenID is hard!"?