Thanks - I looked at the abridged rules which are in the selling section:
So, actually, it looks like the rules already state (my bold) "... Provide any content that may give rise to civil or criminal liability of the Administrators, or that may constitute or be considered a violation of any local, national or international law, including -- but not limited to -- laws relating to copyright, trademark, patent, or trade secrets.".
Which kind of covers it : fake logos are a violation of copyright and trademark!
Can you link to those T&Cs, please, as I couldn't find them!