Thats a peculiar statement, how is her linking to her commercial site known to you to be making her anymore or less money than other traders?
Is it only bad traders who dont make money that you think should be allowed to do it free with links then? And how do the mods police wether or not anyone is making money, or do they just ask you by PM to make a decision on that?

Or is it just birds who are fit?

Id just like to know the rules, so I know if they apply to me or not, if its fit bird pictures based, im sure I can knock up a sig with some tits in it to advertise the business I have in mind