The other issue that is often overlooked has to do with use in some Public Places, Work, etc....

School Systems often have a zero tolerance policy on nudity in any form and I can see art teachers looking for some images needing to know if an image contains nudity

Many local Libraries and other locations that offer Computers for public use have designated machines if you need to view Nudity or other content of a mature nature.

Tagging in Galleries help everyone meet these requirements. Mistagged or missing tags can get the viewer in trouble.

ratscloset
aka John