While these may be somewhat useful, they're not significant enough examples in the broader space to provide the sort of data, evidence, support (or lack thereof) which I think you might be looking for....

https://techcrunch.com/2024/02/14/bluesky-and-mastodon-users-are-having-a-fight-that-could-shape-the-next-generation-of-social-media/

The linking between physical book and digital book is somewhat reminiscent to me to Livescribe.com's use of Anoto digital paper and direct linking of handwriting on the page with recorded audio. Perhaps the physical book and digital book could use such a substrate to effectuate some of the work seen here, but also do it in a way that is easily (digitally) recordable as well as replayable. They've also done some of the handwriting to text work one might want in this space.

https://bluesky-atom.appspot.com/

Set up for myself on 2024-01-01

Applying the WEF meme about pods and bugs to Threads inspiring Bluesky and one Mastodon app to push algorithmic feeds.

https://indieweb.org/bsky.link

https://firesky.tv/

https://indieweb.org/Bluesky

It is a pretend one.

How do you block someone from commenting on public speech? 🤔

https://twitter.com/i/spaces/1vAxRkVrMPzKl

https://snarfed.org/bluesky-satellite-contest-entry