Here's a little image I "visioed-up" explaining how a user David could log into BlogMatrix using his OpenID identity of "http://davidjanes.myopenid.com". It's a workflow that you read from top to bottom. The neat thing is that from David's perspective:
- he only needs to know one login/password pair for all his OpenID enabled accouts
- compared to a "normal" login session, there's an extra step -- rather than entering the username/password on the same page, he enters his username (i.e. OpenID identity) on one page and enters the password on the next page
