Requiring 50 posts was done for several reasons. One was to make it less attractive to trolls. The other was so a fur should become a contributing member for access to the adult section. Rather than a sign up, view, and leave. It makes it a little more exclusive and unfortuantly inconvienient at times. But it helps keep a higher degree of responcible members in a subject where kiddies love to flock too when access is easy.