I started doing airdrops last year the form was lot easier that days no need referrals..nowadays lots of scam airdrop and some airdrops you need to refer first so you have tokens...Right now I prefer doing some bounty campaigns..
I think i prefer this ref system in airdrops... That way you see very less dumpers... And it helps the project grow... Ever since this system was introduced.. They've bn very less scam projects especially those asking for donations