I've almost quit as of the last 2 months because so many are just scams or never go anywhere.. other ones require KYC or just don't offer enough incentive to really be worth it.. Airdrops have slowly become less popular in 2018 and I think will be less commonplace in 2019. I've had 2 airdrops from 2017 that were wildly successful and were great profit for the time spent, but I just haven't found anything worthwhile in 2018.. maybe 2-3 worth 20-25 bucks (lol i know, sad)