As summaried by AirdropKing. Airdrop is another term for free cryptocurrencies. These free cryptocurrencies (also called coins or tokens) are distributed by new projects. These are their own and new coins. Therefore, it's verly unlikely you get bitcoins or ethereum in these airdrops. You'll receive POLY, OMG, DBYTE or however they call their tokens.
Why is the Crypto Free (a free package)?
the main reason why many firms give out free crypto is Marketing "Creating Awarenes"
In order for a cryptocurrency to be useful and worth something it has to be used by people and this is hard to achieve.
Reason are listed below
It's an easy way to build a large community because everyone loves free tokens.
Another reason and pupose of this is to draw people's attention to the project.
Given out free token will eventually even buy them tokens, since the project appeals to them.
How airdrops are mostly done
You can participate like joining a Telegram chatgroup or following their Twitter account but only until the end the airdrop. After you received the tokens you can leave the channels. In most cases it is a so-called ERC20 tokens, a cryptocurrency based on the Ethereum platform. Therefore it is necessary that you have at least one Ethereum wallet address.
