Neither Facebook (FBConnect/oAuth) or Twitter(oAuth/xAuth) are OpenID providers...
>google+Yahoo users > tweeter+facebook
Meh, OpenID is inferior to oAuth or at least oAuth+OpenID, and besides, those are both "social login"-types which I figured you were mocking in general.
Yes, when you login via Google and Yahoo's OpenID, it's effectively a "social login".
If you can type your OpenID endpoint for your Google account without looking it up, I'm willing to discuss otherwise. This is why it's "Login via Google" and you never hear of people logging in via a generic OpenID provider and then using their Google OpenID URL.
>google+Yahoo users > tweeter+facebook
Meh, OpenID is inferior to oAuth or at least oAuth+OpenID, and besides, those are both "social login"-types which I figured you were mocking in general.