I don't write content for the ADFS team anymore; there are a few resources, however, that you can go to for more information.

-- My friend Nick Pierson is responsible for both the TechNet content on ADFS for IT Professionals, as well as the ADFS Documentation Blog

-- Developers can check out the ADFS page on MSDN to learn more about using ADFS in your own solutions

-- Developers interested in federation should also check out Microsoft Code Name Zermatt, and Windows CardSpace

-- The product support team for ADFS also has a ton of great information on their blog

-- Keith Brown at Pluralsight also has plenty of information on identity issues, including ADFS and Zermatt

If all else fails, I'm always happy to try and put you in touch with someone on the Identity team.  Let one of us know how we can help!