I'm sorry, maybe I don't read enough about crypto--what is an airdrop coin?
It actually means that once the coin is dropped on Bitcointalk, money is being generated out of air.
~CfA~
I think airdrop is a coin that is given free of charge, and how to get it is very easy we simply register in the form airdrop but there is usually a maximum quota limit so we must quickly to get the coin airdrop