* The blog must have a recent post, no older than 12 months, to meet the recency criteria for inclusion.
* Criteria for posts to show on the website: Blog has recent posts (<7 days old), The website can appear in an iframe
The latter criteria is for the website / post to appear in Kagi's random Small Web feature, where they display the blog post in an iframe. (So I think only posts from the last week are displayed there.) Being on the list should ensure that any new posts could be displayed in Small Web though, and presumably that the website is indexed in Kagi's Teclis index as well. At least, I really hope that the Teclis index is including all of those old blog posts too, and not discarding them.
EDIT: I just realized freediver actually is Vladimir - I'd love to know if Teclis does index all those older blog posts too. I assume it does index everything that is still present in the RSS feeds?