Often people search "how to earn free money" which is quite complicated IMO. Everyone want to earn some money from internet which is almost impossible if you are looking totally free. I have remembered a story long time ago in our country, there was a online survey and they have asked to participate on the survey in order to get mobile recharge (balance). So I go in deep to check what is that and eventually a message popped after complete survey and that is "Nothing is free on the world". So from there I have learnt it and never tried for free money. Either you should have best knowledge and time or you have to invest on some good platform (doesn't mean PONZI scheme). If you have good skill or knowledge then you have to spend time like you may work web development or design, then you may earn some money over internet. If you fund then you may start lending business even on the forum. So spending time on Airdrop or similar platform wouldn't give your cost of your time. Find some real earning source would be a wise decision.