shambles

i own the exact name of 2 major sporting organisations - something akin to miamidolphins.com. i know i can make a fansite legitimately. obviously i would never do anything to lose the domains, but hypothetically would that preclude me from putting up banner ads, etc? basically, what's the borderline between legitimate fansite and trademark infringing commercial site?

thanks

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Comedy.org on auction at Sedo until 4th of June
https://www.sedo.co.uk/auction/aucti...ed=&partnerid=