I find myself uncertain if you are actually replying to me, and if so, if you understand what I mean by delegation. I thought more people knew about this, but in the past few hours I continue to see a lot of comments that leads me to believe this is not common knowledge and that not everybody understood what delegation is.
When I give my open ID to a site (usually blogger.com to make a comment), I actually type in "jerf.org" after the http:// , with nothing else. I do not have a provider set up, which I looked into but is a pain in the bum, and, as it turns out, entirely unnecessary. Instead, the OpenID consumer hits the page I gave (my domain's front page, as it turns out), finds those tags, redirects to "whatever those tags say today", and then I log in that way. When I have successfully logged in with the delegated service, then I have successfully authenticated myself as "http://jerf.org". I say "whatever those tags say today" because if I change those tags on that page to delegate to Google, suddenly I can log in with Google, but I will still be authenticated as "http://jerf.org". If AOL, my current delegate, decides to get out of the OpenID business entirely, one minute with vim on my website allows me to move it somewhere else, again, all along, I'm "http://jerf.org". This layer of indirection solved all the problems I had with the idea.
I don't have "many" OpenIDs, the phrase of yours that led me to wonder if you (and perhaps others) aren't following me here. I have one: http://jerf.org. Of course like everybody else I can't even count the number of accounts I have with various OpenID providers, but I don't care; http://jerf.org is my OpenID, and will be until I no longer have the domain.
I also don't know why it would "appeal" to one of the crowds you listed, but not others. The crowd it "appeals" to is the crowd that has control over a website that includes the ability to set arbitrary tags into the heading of a webpage, rather than a pre-canned HTML template that can't be touched. Unfortunately, rather fewer people have websites with that amount of control than I'd like.