If I might throw in $.02 about child nudity.  Child nudity for the sake of art by itself is not illegal, controversial, yes, but not illegal.  Until 2003, virtual pornography in the United States depicting minors was not illegal until George Bush signed the PROTECT act (which even makes some of your favorite ANIME -not hentai- illegal by definition).  So I don't think it's out of line for a Renderosity that is open to WIDE community that has tastes outside of the constant pinups to enforce strict rules and interpertations regarding this matter.