Guys, you all have to check every airdrop out, like investor have to do that before supporting every ICO. Honest airdrops have rules which tell you when you receive tokens, what conditions have to be completed (often not only your activity, but for example reaching softcap out) and what they require from you. The scams are these ones which have no rules, have dishonest rules (big activity for small prize) or their rules pretend their honesty and there is no intention to sent the tokens.