The most of startups (icos) do not enough money for marketing so they preffer to build an airdrop or a bounty campaign . You should exit from airdrops and join on bounty campaigns . You will see the difference
How can i find good bounty campaign? i dont really like campaign that last a long time because i dont want to be invested in a thing for too long a campaign that would last for a month or two would be the thing for me. how can i find those kinds of campaign and how to know if they are good ones?