Tag pages on this site are generated automatically from whatever tags posts happen to declare, which sounded like a nice, zero-maintenance feature right up until I actually looked at the list of tags it had produced. There was a tag with exactly one post on it, used once, for a topic close enough to an existing tag that having both was just noise.
Going back through old posts to consolidate tags was the closest thing to an editorial pass this site has had since I originally wrote them. I found two posts that, in isolation, made complete sense, but next to each other on the same tag page told a small story I hadn’t noticed while writing them separately months apart — a debugging post and a tools post that were, it turns out, about the same underlying habit.
That’s the actual value of tags on a site this size: not navigation, exactly, since there aren’t enough posts yet for anyone to need it, but a forcing function that makes me look at the whole body of writing as one thing occasionally, instead of one post at a time, forever.