I spent this morning adding i-name support to the
openidauthentication plugin. Until it gets merged with the master repository, you're welcome to take a look and tinker with my branch on Github: http://github.com/peat/openidauthentication
What is an i-name? It's an alternative way to identify yourself through OpenID. Instead of using my DNS based OpenID (peat.myopenid.com), I can use my i-name (=peat) ... it's a lot shorter, and it's not explicitly tied to a specific company or location.
Interested? Read more about i-names over here.