I think the most successful airdrop that I have participated in is Hydro airdrop it was a memorable airdrop that made a profit for airdrop hunters. I hope someday we find an airdrop like that
I remember this one also and some of my countryman becomes really rich because of this Airdrop 'HYDRO"
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But nowadays there are only very few airdrop that really brings good to hunters and there are some Good that i research but the tasks is really hard and i cannot even comply.
I will try to check this one now as i have plenty of time because of another ECQ implemented in my location