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I guess it's quite a special case since they insist on doing their voting late for unknown reasons. So there's not much we other stakeholders can do aside from asking them to vote within 24h so people don't leech rewards off of them. Now as what seems like a "last resort" to bring down the leechers APR is downvotes but that also hurts authors so it's not a great solution. Instead they could just start curating more often throughout the day by with more curators.

The best solution in that case is stopping that crazy delegation, it looks like the person died not sure, that would be my guess! There are tons of big zombie accounts around...we were talking one of these days about some of them... their activity is just random curation no other transaction happening...