OpenID Use Case

HI.

I have blogged about OpenID Use Case with Sequence Diagram, where 
Discovery and Authentication services are separated.

Here is the link: 
http://www.sakimura.org/en/modules/wordpress/index.php?p=85

Comments welcome.

I think it works, at least for URL based OpenID.

I need to understand how the XRI resolution is going to be done.

Who is working on it?

=nat