I followed the instructions here to create an OpenID for myself at MyOpenId, and added the magic bits that associate this weblog with that ID:
If you do a View-Source you'll see these two link elements in the section of the HTML.
So now I can use any of the services that use OpenID as an identity system, and not have to create a new identity.
It took a few years, but it's great to see software actually being built around the identities that aren't vendor controlled. [Scripting News]