Read the original article on Google's Blog http://google-code-updates.blogspot.com/2008/10/google-moves-towards-single-sign-on.html http://google-code-updates.

Read the original article on Google's Blog http://google-code-updates.blogspot.com/2008/10/google-moves-towards-single-sign-on.html http://google-code-updates.blogspot.com/2008/10/google-moves... They don't want to add just another OpenID to the mix. They want to leave people with the same signup procedure they're used to (ie. enter your email). However, if they enter an @gmail.com address, the server automagically figures out how to log them in using OpenID. It's a good idea in theory, but seems like it will require a fair amount of rewrite on the OpenID library side. Not a big fan of that...