Kagi smallweb has an RSS feed of all blog posts. It might be nice if there were an automatically generated OPML file of them as well, for the sake of separation and ease of use with imports to RSS clients.
Users would give the file to their RSS client, which would then have a folder containing each blog's individual RSS feed. This extends the usefulness of having the blog's RSS feeds by allowing each site to update individually, and RSS clients to search/parse the entries from each feed.