In the comments area of an entry by David Weinberger entitled How do you sort your books?, it’s interesting to note that people don’t just categorize their books on their book shelves but they categorize them by the rooms they are in as well. Again this relates to the concept I mentioned before about using different areas or spaces of your site to auto-categorize your content. And actually blogging platforms that allow you to add content via the front-end of the site (like Squarespace) are perfect for this type of auto-categorization system (if the system is programmed this way) because all you need to do is view (or enter) the section of the site where you want to add the new content and the act of doing that automatically categorizes any content you add to it.
For example, if you click on one of your categories in your journal, you’ll see a filtered listing of entries related to that category. Therefore in that view, if you click to add a new entry, the system could auto-tag your new content with the exact same category filter since you want it placed in that same area or space.