Thanks for the comment, airdrops are a very good way to attract people to join block-chain technology , more people know about it . Faster will come future 
Airdrops aren't attracting people to join blockchain technology but it's main goal is to attract investors and take profits afterwards.
Second person get tokens or coins , he/she already see some product witch can to use in future , of course it's not teaching person how works technology , but showing how to use )) And potential client arrives )))
This is also done in order to have more decentralized product in beginning )))
I think for investors it's more working bounty programs )))
Bounty make more activity to find investors or not ? ;P Airdop helps make groups more full But nothing else ))) 
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