I would guess that the LW moderators can, with at most moderate effort, find the answers to questions of the form "so, who just downvoted 20 of JoshuaZ's recent comments?"
As far as I know that feature isn't implemented. It would certainly be something that could be implemented if it turned out to be sufficiently desired. This would catch lazy mass-downvoters and force dedicated mass-downvoters to use a little more effort and patience.
I wasn't (for the avoidance of doubt) conjecturing that there's already a nice UI feature where you click a button and it says "wedrifid has downvoted JoshuaZ's last 20 comments" but, rather, that (1) the information is present in the system somewhere and (2) there are probably ways for a moderator to get it, even if they're less convenient than just clicking a button -- if they thought it worth the trouble.
This is a new thread to discuss Eliezer Yudkowsky’s Harry Potter and the Methods of Rationality and anything related to it. This thread is intended for discussing chapter 93. The previous thread has passed 300 comments.
There is now a site dedicated to the story at hpmor.com, which is now the place to go to find the authors notes and all sorts of other goodies. AdeleneDawner has kept an archive of Author’s Notes. (This goes up to the notes for chapter 76, and is now not updating. The authors notes from chapter 77 onwards are on hpmor.com.)
The first 5 discussion threads are on the main page under the harry_potter tag. Threads 6 and on (including this one) are in the discussion section using its separate tag system. Also: 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17,18,19,20.
Spoiler Warning: this thread is full of spoilers. With few exceptions, spoilers for MOR and canon are fair game to post, without warning or rot13. More specifically: