I've coded a new feature for the blog: "previous" and "next" links! As you can see below, each post now links to its predecessor and/or successor. (IndieWeb people, those links have rel="prev"/rel="next" classes on them for machine consumption.)
Further improvements will include post tags, on the index and on individual posts; I also want to display approximate wordcounts for each post. And of course, I'm still missing comments (but that will take more doing than the other two.)