Token airdrops seem to be a thing in crypto PR right now. An airdrop is basically when a blockchain project decides to distribute free tokens, or coins, to the community. This happens after the project has completed its ICO and the token has become tradeable on the open market. In most cases, to be a recipient of an airdrop the only requirement is that you have some coins from the relevant blockchain stored in your wallet ie, if the company doing the airdrop is based on Ethereum, you need to have some ETH; if its based on Bitcoin or Ripple, you need to own some BTC or XRP. You need to be keeping your coins somewhere that has you in control of your own private keys, i.e. not on an exchange (where you really shouldnt be storing your coins anyway, unless youre using them for trading).