In terms of Livejournal's use of OpenID, I have a question. Currently, you have people using "username.livejournal.com" as their basis to login on someone else's site. Since people would see that and assume that's the URL that the person is coming from, what would happen in the case of free accounts.
Also, I have seen sites which use a login scheme to access accounts like "user:email@example.com" is there anyway that an addition to the OpenID spec could be made that could let a user of an existing site use OpenID as "firstname.lastname@example.org" instead of using a URL?
Sorry if this seems like I'm being a pest. I'm just really curious about the specification as a whole.