Can we stop the spam from bitcoinist, livebitcoinnews and newsbtc?

Accounts like this one:

/u/himadri-saha

Constantly spam posts from three sources, using vote manipulation to game the front page.

All 3 of these sites are owned by the same person.

They share the same ETH address for advertising:

LiveBitcoinNews: https://i.imgur.com/EjAW8Rx.png

Bitcoinist: https://i.imgur.com/REe4lRH.png

NewsBTC: https://i.imgur.com/2gZrBZj.png

Is this acceptable? I'd like to hear what the community thinks.

/u/jwinterm is great at dealing with this but obviously stuff slips past.