This is a good move for this platform so far. Airdrop event will surely help for DECOIN project to be known here in bitcoin community. But for me it is not enough, they should have bounty campaigns inorder to gain more popularity because as I have noticed, the dev team did not do anything to promote this project here in crypto world and most importantly in social medias.
Most coins do airdrop these days is just a way of creating awareness and letting investors take note Is a good strategy actually
Now airdrop was divided into two camps, some just earn eth on fake deceptive airdrops, and is really honest which pay, but the sums usually cheap, and it is necessary to wait of two months, only couple of good payments were in 2017.