Google Shutting Down Open ID 2.0, Migrating to Google+ Sign-In
Bill Hartzer
JANUARY 3, 2015
For example, they could actually identify the sites using it–and then contact the site owners using Google Webmaster Tools. April 20, 2015: OpenID is shut down. However, I believe that there would most likely be a way for Google to identify the sites using Open ID 2.0. A static error page will be displayed on all requests.
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