I never said anyone had to put them in the forum. One guy did and everyone kind of followed suit. So, that's a difficult question to answer.
I don't have any specific rule about one person's big 3 being exclusive, but if you guys are going to post them I figured I might as well double check that they are legal.
If you want to post yours in the forum in the hopes that no one copies it (honor system there) then go ahead, but as of now there is no rule against that.