There's a guy called haejin who's apparently voting with a stolen account called ranchorelaxo. He randomly upvotes the top trending posts with 100% strength without reading them. I have a bot setup that does a lower value downvote to counter some portion of his upvote, so that trending posts don't get hugely overrewarded versus other posts that don't receive his vote (you still get rewards from his vote, just not as much). The downvote has no more to do with your content than his upvote had to do with it, so please don't take it personally.