It probably has to do with the speed of upvotes or percentage of upvotes per viewer. It pretty rapidly has gone to +17. There does seem to be some kind of "upvo

It probably has to do with the speed of upvotes or percentage of upvotes per viewer. It pretty rapidly has gone to +17. There does seem to be some kind of "upvote recency" component to the algorithm. Older upvotes stories drift down and newer quickly upvoted stories drift up. I doubt there is a conspiracy (except for those employment posts that can't be replied to).