php Programming Glossary: login.mysite.com
Cross Domain Single Selective Sign In http://stackoverflow.com/questions/2261300/cross-domain-single-selective-sign-in In short you'll be setting some sort of auth service on login.mysite.com to answer queries from mysite news.com and mysite blog.com... discovery part of OpenID and always redirect users to the login.mysite.com provider. And login.mysite.com gets to skip the step of do I.. redirect users to the login.mysite.com provider. And login.mysite.com gets to skip the step of do I trust mysite blog.com because..
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