I follow usually see telegram groups that actually provide accurate information. i did a small stage before going in to check it out. I usually monitor it from The Airdrop Detective telegram group. Maybe the prize is small, but if it's proven to be paid, I don't think there's anything wrong with joining and participating. For others, more in-depth research is needed. 
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Telegram groups are good if they are not created specifically for advertising scams. It is better, of course, to enter closed channels and use the insides. That's where the community really makes money from the drops. .