He downvoted one of my comments too, as one of many... no, wait... ALL of the comments under a post. Looked at his profile, like you did... but luckily I decided not to flag him but to make sure this gets reported. I wrote a comment here: https://steemit.com/steemit/@drakos/time-to-fight-spam-no-more-passive-resistance
And I it seems that it's already taken care of. :)