Alternative solution: Let every bitcointalk forum member with a rank higher than "Member" provide one airdrop address, and then "airdrop" 10 BTX to that address. (We will anyway not get more than 1000 user by this forum, so the airdrop should be smaller but fairer) This way you can more or less assure a fair distribution without concentration to whales.
Edit: The criteria could also be, that only an address with atleast 1 BTX coin inside is eligible for the airdrop, thus you can be sure that the person contributed to the coin either by
- Mining
- Claiming
- Marketbuy
also this is a nice idea using forum to have an unique address and making multiple account will be only a waste of time