I'm trying to accumulate as much BTX as I can. The project I liked at first sight and has already shown its consistency in the market. The next step is a persistent posting on the site coinmarketcap, first page.
I bought BTX when it was 4-6 USD and I looked at the airdrops which would give you a nice profit.
So two months later price was $10-11 (before the 25% airdrop) and other people thought it's good to buy because you will get 5-8 months of airdrops
Now price is $27 and new people coming to BTX see the future airdrops and think it's a good price that you get airdrops..
etc
Don't try to follow this logic forever
Last airdrop was distributed only within ~4500 adresses while 26k was registered. I suppose when people fix all their zero balances airdrop will last in 3-4 month