Just make a subforum for them ffs.  I don't see any reason for a ban.  The whole point of the giveaway is to add awareness, the only problem is when the giveaway died the topics kept getting bumped instead of locked.  The giveaway threads were the good topics in the board, the bad ones were mostly all the others.  

I just don't get why you can't give them a subforum if you hate them so much.

edit--seriously half the topics now are "this coin that's mostly the same as the others is best" and other topics that are only posted and argued on by people with self serving interests and THAT's what you ban?