The question first, then the background info:
How do I set up a personal category to only show if the user asks for it?
But then you ask, why ask this in design, not another portion of the forum better suited? The answer: I want to figure out what it should look like first, then code the darn thing.
My blog will mostly be focusing on professional issues, but I want to be able to post personal things on it, but not force a regular user to wade through my life to see my real message. I want the solution to have high usability, but in no way detract from my existing visual style.