Random thought: saw the mention of Isso, for a commenting system that can be used on static websites. Had the idea of something similar with ActivityPub instead, but then thought further of something where you could have something essentially proxy and transform content from a static website (given some URL pattern of which pages should be included/exempt, and where to extract content from).

Ergo, you could have some blog or other personal website, that could even be static, while having some secondary service that can transform it to ActivityPub, Nostr, or other representations, and serve an embedded (and moderated) comments section, without needing the content to originally be inside of some natively ActivityPub-based (or extended) platform.

Hell, even stepping even further: maybe could do it for an art gallery system too, that could do automatic cross-posting.