One of these problems is where you throw something into a reasonably general and catch-all category such as blogging only to find that you've made enough posts on the subject to justify either moving it to an entirely different category or a sub-category.
However pyblosxom doesn't really support moving of posts between categories or having posts in multiple categories, I could probably do some mod_rewrite magic, but that would be clumsy and difficult to maintain long term, so I'm adding a few "see also" posts in the appropriate categories to attempt to indirectly resolve the problem.
Yet another example of the famous dictum
Any problem in computer science can be solved with another layer of indirection - David Wheeler - chief programmer for the EDSAC project in the early 1950s.