As a method of basic earnings, AirDrop is certainly not relevant. Airdrop - additional income. This is a way to spend time in exchange for crypto currency. There are a lot of projects that distribute their coins. Perhaps one of these projects in the future will be in demand, relevant, coins of this blockchain will be quite expensive.
I registered in 20 projects, and I bought 8 different ICO projects, which in my opinion, can in the future rise to the top on coinmarketcap.
What do you need to participate in AirDrop?
Sometimes, you need to specify Twitter, FaceBook, and perform multiple tasks. But basically, you need to specify only your ETH-purse in the nickname in the telegram. Also, airdrop is suitable for people who want to experience development in the crypto-currency world, from scratch.