Since the episode with Eugine_Nier, I have received three private messages from different people asking me to investigate various cases of suspected mass downvoting. And to be quite honest, I don't want to deal with this. Eugine's case was relatively clear-cut, since he had engaged in systematic downvoting of a massive scale, but the new situations are a lot fuzzier and I'm not sure of what exactly the rules should be (what counts as a permitted use of the downvote system and what doesn't?).
At least one person has also privately contacted me and offered to carry out moderator duties if I don't want them, but even if I told them yes (on what basis? why them and not someone else?), I don't know what kind of policy I should tell them to enforce. I only happened to be appointed a moderator because I was in the list of top 10 posters at a particular time, and I don't feel like I should have any particular authority to make the rules. Nor do I feel like I have any good idea of what the rules should be, or who would be the right person to enforce them.
In any case, I don't want to be doing this job, nor do I particularly feel like being responsible for figuring out who should, or how, or what the heck. I've already started visiting LW less often because I dread having new investigation requests to deal with. So if you folks could be so kind as to figure it out without my involvement? If there's a clear consensus that someone in particular should deal with this, I can give them mod powers, or something.
I was one of Eugine's targets (though to a lesser extent than some). I have ~6200 karma and ~90% positive.
I think David Gerard was one of Eugine's targets. He has >8000 karma and ~75% positive.
Stuart Armstrong was (so at least one of his comments suggests) one of Eugine's targets for a bit. He has >13000 karma and ~90% positive.
Cyan says he was one of Eugine's targets. He has ~5000 karma and ~90% positive.
Ialdabaoth was one of the first people (maybe the first?) to complain of Eugine's abuse. He has ~2000 karma and ~75% positive.
In the course of looking out prominent contributors who were hit by Eugine, I didn't find anyone who looked like they might have been high-karma and high-positive-proportion without Eugine's attacks.
[EDITED to add: For the avoidance of doubt, the above is not intended to be a complete list, nor a list of the highest-karma, best-positive-fraction, most-abused-by-Eugine, or any other such selection. It's just some examples I noticed.]
I currently have 685 karma at 65% positive. Assuming 200 downvotes from Eugine, upvotes of X, and legitimate downvotes of Y, then X/(X+Y+200) = 65% and X-Y-200=685. Solving gives Y=599, X=1484. So without Eugine I would have had 885 karma at 71% positive.
If I had 300 downvotes from Eugine, that would be Y=511, X=1496 which is 985 karma at 75% positive.