I read your post, the title got my attention.
I wrote a POST the other day and I got a $7 downvote on it from blocktrades and purely because they clearly have someone else on a downvote trail.
This is due to the big rancho vote, his DV did not wipe out the rancho big vote and I understand why he's doing it. He DV'd me last week for the same reason, and I have met blocktrades TWICE so I know it's not personal. He's trying to get rid of someone, it's not a slight on your work.