I was seeing this from time to time on Steem for a month or two before we moved. There are some very sketchy censors claiming to oppose censorship deeply linked to the oligarchy controlling Steem/Hive governance.
I hadn't made the connection to @buildawhale, and very much appreciate your insight. that is critical to understanding the connections underlying this censorship mechanism, and may facilitate further elucidation of features of the mechanism. I note the blacklist API has just been ported to Hive, and suddenly this censorship is appearing. Not a coincidence. I'd bet all my liquid Steem the blacklist API is the cause.
Thanks!