In my opinion, too many comments lately have explicitly incidentally discussed their authors' votes; I think it distracts from the actual topic and metadiscussions ought to be separate comments.
Counterpoint: knowing why other people vote or don't vote is helpful. Voting alone provides little information about what people did or did not like about a comment.
However, it does distract from the primary topic and some sort of side channel for such discussions would be nice.
Here's our place to discuss Less Wrong topics that have not appeared in recent posts. Have fun building smaller brains inside of your brains (or not, as you please).