modest proposal for "good enough" authentication via your own URL: OAuth + Twitter (AKA TwitterAuth) + rel-me bidirectional identity consolidation. works for all users who enter their site in their Twitter "More Info URL" setting, and put a rel="me" hyperlink from their site to their Twitter - easier than having to write/maintain two invisible link rel="openid.*" tags to their OpenID server/delegate URLs (and having to learn what those mean/are).