Interesting finds. This research shows, that OpenID is not yet for everybody and there’s a lot of work to be done to make this technology mass compatible.
“None of the users had heard of OpenID before, and none of them even noticed the OpenID sign-in box displayed below the traditional email/password login form on the site. In many cases, the test subjects entered their Yahoo email address and Yahoo password to try to log in. We had told the test subjects that they could sign into the site using their Yahoo! account without having to register.”