I think your missing the point, reading in morality and reinforcing your own perconseptions(sp).

Art is speech!!!

Useing this or that standard based on morality is a slippery slope.  A nipple and a hand are the same thing in an image. At what point do you apply subjective standards. 
Is it enough to cover a nipple with a pastie? Does 70% of the breast need covering? where does the breast stop on the side. How many pubic hairs are required? Whats the min. breast size. A cup, D cup? All subjective to your personal POV. This is not a content debate. It is a morality debate.

Art is speech. Just because this is a private site dosen't mean it is without regulations. As it is the largest art site it also has public access rules. A grocery store may say no shirt, no shoes no service. But they can NOT say only native born americans or only white people can enter.

Also, as the largest art site with a world wide membership it should be EXPANSIVE in it's open speech policies. Just because Kuwait has a rule against saying anything against any other religion. It is NOT RR's responsibilty to comply with it. Especially in the United States of America. And it goes the other way also, it's not a British citizens responsibilty to comply the Utah's local customs.

Art is speech!!!
 A nipple and a hand are the same thing in an image and under the first ammendment.