That's why I have had mixed emotions about SAML's successes in enterprise, higher education, and e-government scenarios. Nice, but not really bringing me any closer to realizing my dream.
Today, I am happy to announce that I can place a checkmark besides this goal. Done.
Globo is a Brazilian media site, and they've implemented SAML.
Brazil. Photos. Videos.
I encourage readers to fully explore the Globo site in order to better understand their identity management requirements. It might be an idea to restrict such exploration to your home internet connection.