the airdrop for me its super profitable to gained money, even its all free but you need also to support them, what i mean is if you buy some token or coin for better,. i know they dont yet if they success the project i just suggest its get to support them, even its small money you spend in that project but soon your spend money to his project your profit make 3x income.
The truth about airdrops in 2019 crypto market is you must have promote airdrops projects that worth over a thousand dollar to earn 50$ because many airdrops have no value when they list on exchanges and some won't even pay participants at all,there are many i promoted in 2018 and they haven't pay token till today