So, I do not know specifically how NCWW was set up, but my guess the off topic was set up in the beginning, like many other forums do. Remember, the software that drives this site is an off the shelf product. As such, likely this was something that the original menu set offered and was set up. That said, as most forums go, people begin to post most postings in the general forum and to not label the off topic category to their posting. At least that has been my observation.