The same thing happened to @michelle.gent and several other by different people with similar actions. Their F-ed up logic is "Reward Pool Rape". Basically the amount of STEEM in the reward pool is allocated based on the voting weight. There are some who think they know how to objectively value content and flag posts to make sure that the posts get "The correct amount of rewards"

Take a look at the activity https://steemd.com/@grumpycat
Majority of the voting power is used on flags.

I've expressed my opinion on the matter extensively and that was weeks ago. I didn't think @haejin will have to face this garbage but it has reached here here too. I don't want to re-type what I've said weeks ago taking hours to explain. It's already permanently stored in the blockchain.