Hello everybody

I want to ask something, why every day even every time a lot of airdrop programs that appear? I do not know where they came from and how they came, suddenly appeared. thanks
Airdrops are means of promoting a project and ICO. So for every new project that hits the space, whether they launch on Ethereum or NEO platforms, there'll always be airdrops. Sometimes these they give airdrops to ETH or NEO hodlers only. An example of that is Ontology (ONT) which was given to NEO hodlers only.