Add categories to post entries?

Add this to my Radio wish list: I’d like a way to indicate what categories have been added to a post. This would be an effective way of showing how I think a post should be categorized, and would also reinforce the notion that there are other ways to browse this site. The more I think about it, the more I think that Jenny’s right on when it comes to meta-data: we need to figure out how to add useful meta-data to weblogs.