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.
Personally, I am pretty certain that is gender issues that cause my karma stalking. It's the only topic I write on that gets any significant number of downvotes. Also, due to timing, my best guess (though I'm not highly confident) is that the triggering event was my post in the mistakes thread admitting to staying married longer than I should have due to not being confident in my independence. I knew when writing it that some of the MRA assholes on here would take offense at it.
Also, whoever is doing it has pretty effectively made me unlikely to post a lot on here. (I still occassionally browse, and obviously I'm writing this, so it's not like I've completely quit or anything.) It's annoying to deal with (and saying "you should just stop caring" is about as effective of advice as telling people to "be more confident"). Considering that half my facebook feed is rationalist/LWers anyways, it's higher reward to just post my thoughts there and not have to deal with the LW baggage, but still get the interesting conversation with the people I want to talk with anyways.
Just figured I should say something because if evaporative cooling is happening in general (and it isn't just me), it could be hidden because the people who leave aren't saying anything.
(ETA: I actually have not lost a LOT of karma from this, so it's not the amount/number. It's just the fact that it's consistent, and it's everything I post)
Huh. This just convinced me that I should be quick to upvote things if they were even a little helpful, so that no one who isn't posting really counterproductive stuff gets that negative hit. Because you're probably not on my facebook feed, and I probably don't already agree with all the things you're going to say, so I want you and people like you to keep posting on lesswrong.