OpenID Loses Major Proponent, StackOverflow @ InfoQ
"OpenID has lost one of its largest proponents. Stack Exchange, the company behind StackOverflow and other Q&A websites, will be completely eliminating support for OpenID on July 25, 2018. This continues a long running trend of websites eliminating OpenID from their offerings
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only 13K users logged onto Stack Exchange in the last 12 months. This is out of over 9.5 million accounts, or “roughly one-tenth of a percent”
