Webfinger - http://en.wikipedia.org/wiki/Webfinger http://en.wikipedia.org/wiki/Webfinger - was created for e-mail-as-OpenID-login. I don't know why it hasn't t

Webfinger - http://en.wikipedia.org/wiki/Webfinger http://en.wikipedia.org/wiki/Webfinger - was created for e-mail-as-OpenID-login. I don't know why it hasn't taken off though.