So I've updated the blogger comment code to reflect the changes in their service. Now the "comments" link from the main page and the "post a comment" link from the post page both go to a new pop-up page that lets you either read comments or post them. Not what I'd choose, I don't think, but I'll take it.
Comments still appear on the post page and have their own #'d permalink so that they can be linked to. I've added a permalink from each post too, and changed the signature line so that the timestamp prints without a link & my signature links to my blogger profile. At least it all makes sense again....