Commenting with OpenID?

[amatara]

So, I just changed my account settings allowing anonymous commenters (which, as I realized just now, also includes OpenID commenters) to reply to entries as well. Not sure which effect that will have, but it seems it's not possible to allow people logged in via OpenID to comment, while excluding truly anonymous users? Unless someone can tell me how to do that, for which I'd be very grateful.

For now I won't be screening anonymous comments either, though if it turns out I've opened the gates to spambots with this, that might yet change. I'm still in a major experimenting phase right now, as I'm sure you can tell. :)