Anybody know how to get gmail's OpenID working? All I find is this http://openid-provider.appspot.com/, which gives 302 moved followed by GET not supported on this URL.
I'm assuming this one is broken. Any others?
Update: this no-longer works.
This works as an OpenID: https://www.google.com/accounts/o8/id (worked in 2008, 404s in 2016)
It went live on October 30th, 12 days after the question was asked.
See http://googledevelopers.blogspot.co.uk/2008/10/moving-another-step-closer-to-single.html