I'm just tired of the signal pollution, and would like to be able to use karma to honestly appraise the worth of my articles and posts, without seeing 80% of my downvotes come in chunks that correspond precisely to how many posts I've made since the last massive downvote spree.
EDIT to add data points:
Spurious downvoting stopped soon after I named a particular individual (not ALL downvoting stopped, but the downvotes I got all seemed on-the-level.)
One block of potentially spurious downvoting occurred approximately one week ago, but then karma patterns returned to expected levels. I consider this block dubious, because it reasonably matches what I'd expect to see if someone noticed several of my posts together and disagreed with all of them, and did not match the usual pattern of starting with the earliest or latest post that I had made and downvoting everything (it downvoted all posts in a few threads, but not in other threads), so I'm just adding for completeness.
Spurious, indiscriminate downvoting started up again approximately half an hour ago on Sunday (12/1/2013), around noon MDT.
Edit: And now on Tuesday, 12/3/2013, at 10 AM, I'm watching my karma go down again... about 30 points so far.
Edit: And now on Saturday, 12/14/2013, at 2 PM, I'm watching my karma go down again... about 15 points so far, at a rate of about 1-2 points per second.
I think a lot of different things, because this is a rather emotionally complex situation for me. Some of the things I think about that I can't discuss, because people in PM and off-site have specifically asked me not to. But if I reframe your question into "did I do the right thing?", I don't know. It'll take some amount of time and processing before I can really forge a useable lesson out of all of this.
But I have a counter-question for you: if you have a good deal of evidence that someone is doing things that you consider wrong, AND that more people than just you are being negatively affected, AND that there is no governing body to appeal to, at what probability threshold should you announce your suspicions and request correlation? At what probability threshold should you act?
I would like in particular to hear daenerys's answer to that question as well, to weigh with or against your own.
That option wouldn't have even occured to me without your post. I'd need a reasonable probability of it being useful first, and I still don't have that although we have a nice case study here.