Personally, as long as I joined cryptocurrency I never participated in airdrops. I focus more on the bounty campaign. I think the bounty campaign program is far better and more promising. Although the process that must be taken takes a long time, the results are clear and satisfying. Even so, caution must always be applied wherever you are so as not to be hit by a scam.
I never tried to join in an airdrop before, I only join in bounty signature campaign, and my experienced joining in it I can say not so good, but not so bad also. Why? because I have earned money in it already but not so big, only enough for my daily expenses and cannot make a support to my family.