Just a quick thought though ... about the "subsections" within categories of the forum -- if you have toooo many, it becomes more time consuming to navigate to see what's been newly posted. Have to go to 3, 4, 5, .. 10(?) subsections to check out what you originally had to go to just one section
to see. So my suggestion would be not to create a whole lot more subsections within the broader categories of the Forum. Those broad categories are good enough to tell the viewer the tenor of what to expect in the category (movies, music, politics, general stuff, etc.). Anyways, that's my two cents.