The reason why it might be a good idea for the admins to stomp on such behaviour isn't just that the behaviour is harmful in itself, it's to establish a culture of not doing that sort of thing.
The votes must all be logged already (or something functionally equivalent) because the system already knows to stop you upvoting or downvoting the same thing twice. Providing a UI to make it easy for admins to look for mass-downvoting would be the trickier thing, and indeed it might not be worth the effort. Though, on the whole, I think it probably would be, in order to establish LW as the sort of place where that kind of thing just doesn't happen.
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: