I agree its mostly gone. Here are the sites I can think of that still support OpenID login: https://stackexchange.com/users/login https://stackexchange.com/use

I agree its mostly gone. Here are the sites I can think of that still support OpenID login: https://stackexchange.com/users/login https://stackexchange.com/users/login https://bitbucket.org/account/signin/ https://bitbucket.org/account/signin/ http://openid.yahoo.com/ http://openid.yahoo.com/ still responds, surprisingly. The wordpress openid plugin is still around.