I seem to have gained a downvote on at least the first two pages of my comment history, dropping from 83% positive to 69% positive in the space of a day. I remember mass-downvoting was a big issue here a while back, did we find a way to fix it or did we just ban one or two prolific mass-downvoters?

I'm not angry and seeking revenge and/or compensation, after all I'm still positive for this month, but I'm curious what if anything to do about it. And a bit annoyed that my curiosity about who I've offended and how isn't going to be satisfied because they decided on a downvote campaign instead of replying to whichever comment set them off.