Google is trying to enforce full transparency in their, large, corner of the web. I think they're making a terrible mistake.
I can see why they do it though. Most large sites can't handle the spam attacks routed through anonymous posting.
Gordon's Notes, though, we're not so big. Most of the comments I get are anonymous (excepting Martin and MaysonicWrites). Many of them are excellent. Fortunately Google's AI is now pretty good at killing the spam attacks, so I can easily manage the low volumes I get. .
Anonymity is something a *cough* specialty blog like GN can support.
 Sure would help if Google gave me an RSS feed of comment counts though - so i know there are new ones to inspect. As it is comments go immediately to recent posts and I get a notice by email, but older post comments can sit around until I notice and authorize them.