Its a good idea in general but it shouldnt be done through giveaway on the forum. It would be exploited by giveaway thread scammers. The way to do it would be a faucet giving away inordinately generous payouts and a lot of promotion to make sure that as many people as possible knew about it before hand. Captchas can not be gamed. It would be a really fair way to get a lot of nxt widely distributed among a lot of people. I wouldnt even be adversed to giving the whole 9 mill away like this. Do it in a couple of rounds so that word spreads from the first round so that you have even more participants in the second and third. This would generate a TON of buzz and a lot of involvement.