I'm trying to learn details on how LiveID works, when compared to other federation technologies.
To be honest, I'm a bit overwhelmed by all the options at https://msm.live.com/ and want to understand what I'm doing before I federate my application to LiveID.
In addition I'd like to understand the differences between the free implementatations and the RPS system. My understanding is that there are at least 4 different ways to hook up to LiveID. Considering that large surface area of authentication, and little public documentation, makes me uneasy.