Tree structure looks fine with me, my only comment would be about your url:
http://www.bored-slut-cams.com/fsb1/0_01/
Most builders have been going to keywords on their directories, so maybe something more like:
http://www.bored-slut-cams.com/camslut/slut/
then
http://www.bored-slut-cams.com/camslut/cam/
etc...
How much that helps with search engines, I have no idea...
