it's not a problem that you are not running an ico here but is the total supply unlimited?? and you are giving away a huge number of coins and of course you have a lot in possession also. so what i'm seeing here is that, you are giving coins so once you listed in even in one exchange, there will be trading movement because of these airdrop hunters. but the truth is, you will gonna dump your coins also. simple, easy money from your end. now, how true is that to happening here? such strategy will not give longevity to the coin. just like the old klondike coin, this will be dead, let's say maybe after couple of months in the exchange.