When I made OpenID, I intentionally left the method of authentication undefined. (feature, not a bug!)
Now people ask me what I think about Microsoft supporting it, using their InfoCards as the method of authentication.... I think it's great! So far I've seen Kerberos integration for OpenID, voiceprint biometric auth (call a number and read some words), Jabber JID-Ping auth, etc.... all have different trade-offs between convenience and security. But as more people have CardSpace on their machines, users should get both convenience and security. (sorry, I'm not totally up on all the details... just seen demos....)
Anyway, I and others at Six Apart are thrilled to see Microsoft supporting OpenID. Kudos!
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