Bruce <freebsd@solisix.com> writes:
> I am having problems with my swap space. Maybe. I'm not sure what's
> going on, to be honest. If my memory is at 100% load and I just keep
> opening apps, shouldn't at some point my swap space be used?
Not necessarily.
See:
http://www.freebsd.org/doc/en_US.ISO8859-1/books/faq/misc.html#MORE-SWAP
http://www.freebsd.org/doc/en_US.ISO8859-1/books/faq/misc.html#TOP-FREEMEM
and if you want more information, any introductory operating systems
textbook will spend dozens of pages explaining paging techniques.