As you cas see cheaters/abusers already started creating multiple accounts to join your nice promo and get advantage of it.
If you really want to reserve the promo to bitcointalk community in fair way I would suggest you to allow to join the promo only people above a certain rank or account registered before a certain reasonable timestamp.
Please stop these annoying abusers who are often the main reason for which nice promoes like this are increasingly rare.
yeah the rules should be changed for accepting players , there are already a lot of accounts with only one post who want to join which means 100% they are the same person
the prizes are so nice , so there should be activity requirement to join this promo