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I don't know if he is a scammer or not but what's wrong with a self vote? Maybe he upvoted for visibility. I think it isn't fair to randomly exclude users from the airdrop.

he bought steem to mainly selfupvote

this is considered as gaming the Proof of Brain Mechanics

now he cries that he didnt get HIVE?
HIVE is a new independent blockchain.
If you want hive, buy hive.