So, apparently once you have a bracket created, you can submit that to leagues and all that will appear in the list is the bracket name, rather than your name/email. Still only one bracket per login per league, and for non North American nonnies, there's just a checkbox when you submit your league that you acknowledge that you're only in it for bragging rights, and not eligible for prizes.
Re: Bracket Challenge
So, apparently once you have a bracket created, you can submit that to leagues and all that will appear in the list is the bracket name, rather than your name/email. Still only one bracket per login per league, and for non North American nonnies, there's just a checkbox when you submit your league that you acknowledge that you're only in it for bragging rights, and not eligible for prizes.