This morning I finally finished categorizing all of my old entries. Since the links to the old categories are now totally redundant, I've removed them from the page, and in their place there is a link to a list of all the new categories.
However, that list of new categories will be very much a work in progress. Some of the categories are way too broad and need to be split up, while others are too narrow. I need to analyze how The Stew is performing with this data, and adjust the data and The Stew as necessary, to make the system as useful as possible.