I did not realize comments required users to be logged into to gmail. I have turned that off and anyone can comment.
Comments will still be screened before posting, but only for outrageous spam or personal attacks. Thus far every comment submitted has been approved and I expect this to continue.
(This is less a statement that personal attacks are unacceptable, but more that they are boring. We are here to engage with the text, not to identify and expunge "bad people".)