So does that mean anyone registered after September 1st cannot participate in the airdrop?
Well, I guess it sucks to be a silent reader for very long and only then deciding to register to bitcointalk...
Yes, but it's a temporary measure, a few days ago, it was necessary to be registered on bitcointalk before 12/07... I'm among the people who regularly read the forum without ever registering too and I regret it today... For DO, as I told you, the rules will probably change in a few weeks, so don't hesitate to invest you in the community during the newt weeks and you will apply when they'll change restrictions !
There are still plenty of airdrops left, and the registration date is already changed once from 12/07 to 01/09. So just wait and you will be able to join in one of the next airdrops