Why Microsoft and not Google, Yahoo!, or OpenID?
A. Microsoft has had their system up and running for more than five years. They have had issues in the past but have corrected these. Microsoft has committed their own products including HealthVault which is endorsed by the US Health and Human Services to Windows Live ID. Yahoo! as yet does not have an open system, and Google’s product is still in beta test from. OpenID is a distributed platform that has some advantages but lacks funding.