I'm not a fans of airdrop actually, i rarely join any airdrop project. I mean i'm just going to be more realistist in choosing and i prefer bounty campaign over airdrop to get free coin. Because by joining bounty campaign those coin that we get for free is not actually free since we do some works to get that "reward". i think the possibility of being scammed in bounty campaign is a little less than airdrops. It is my personal opinion anyway