I'm not too familiar with him. It doesn't seem he's using downvotes for their intended purposes in this site, nor in good faith interpreting those he votes down as trying in earnest to learn or make valuable contributions. I'm guessing it's difficult for moderators to permanently solve the problem because Mr. Nier may use sockpuppet accounts.

I made an oversight. Should I edit my OP to include a caveat or note about noticing abuse of voting mechanisms, and how to deal with it?