Does this concept of "personal blog" include people periodically sharing, say, random knowledge on technical topics? Or is it specifically people writing about their day-to-day lives?

How would I check if my site is included?

You can check: <https://github.com/kagisearch/smallweb/blob/main/smallweb.tx...>. I can see that your RSS URL is listed there.

But it currently does not appear in the search results here: <https://kagi.com/smallweb/?search=zahlman>. The reason appears to be this:

"If the blog is included in small web feed list (which means it has content in English, it is informational/educational by nature and it is not trying to sell anything) we check for these two things to show it on the site: • Blog has recent posts (<7 days old) [...]"

(Source: https://github.com/kagisearch/smallweb#criteria-for-posts-to...)