Google has a funky single sign-on delivery solution on all of its sites. It seems that managing multiple accounts is really good, allows you to link accounts, allows the user to choose from multiple accounts when trying to access the service, etc. Etc.
Is there any information on Google's implementation for delivering this SSO solution?
Also, I looked at their login page and wondered if anyone knows the purpose of the various parameters used in the URL on the login screen?
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