Oh wow. Just looked at the votes of a harmless happy post that had lots of upvotes and a few downvotes. With this tool, I was able to figure out who was that one downvoter. Well, then I dug a bit deeper, and found out that this user seems to be a serial downvoter. Every day, there's a proper barrage of downvotes directed at pretty much anything and everything.
I have very mixed feelings about this discovery. Kinda nice to know all this, but it certainly didn't make me happier.