Actually now a pattern has emerged after reading what @penguinpablo said about the behavior of @blacklisted, and fyrstikken
I digged into this because I'm also being downvoted on every post I make. I don't have a clue why.
I'm pretty sure 'fyrstikken' and 'fyrst-witness' are behind the 'blacklist' account. I received an upvote from these 2 accounts on every post I made until the downvotes from user 'blacklist' came in. He then stopped upvoting me.
Something equally odd happened with fyrstikken and voting with 0% power for me and another user, and I think it was in an effort to antagonize me as he would vote for the other person that was clearly butting heads with me, and that person admitted he was trolling, but before that was attacking and disregarding any kind of decorum
https://steemdb.com/@whitezombie/votes?type=incoming
https://steemdb.com/@baah/votes?type=incoming
Scroll down to 5 days.
How can you vote without any voting power? Is that some kind of bug where they vote .0000001% power? It had to have been coded/bot voting, regardless of my comments it seemed, and in spite of the troll attacks, not that my comments weren't full of value, sourced and argued quite coherently and very respectable, no ad hominems or any other fallacious logic.
I will investigate some more, knowing that he is involved in an extortion scheme with @blacklist which has also voted with 0% power https://steemdb.com/@blacklist/votes?type=outgoing
Im pretty sure that 0% thing shows on steemDB when someone upvotes or downvotes something, then removes their vote later. I have reproduced the effecct for you on the above comment so you can see it. This came from upvoting the comment above, the removing the upvote.
The 0% being an upvote and then unvote makes sense, since his bot votes for every single post here. He might go over that list later in the day and unvote those people that he dislikes.