php Programming Glossary: news.com
Cross Domain Single Selective Sign In http://stackoverflow.com/questions/2261300/cross-domain-single-selective-sign-in same site. For example Different domain entirely mysite news.com mysite blog.com or Same domain different subdomain news.mysite.com.. so any reputable OpenID provider will never tell mysite news.com that you've already logged in to mysite blog.com without asking.. In technical terms what's happening here is that mysite news.com and mysite blog.com are conceptually in the same security realm..
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