Thanks for the BookWyrm recommendation, looks interesting. I have tried LibraryThing before, but it wasn’t quite what I was looking for. I started building my own Goodreads alternative years ago since I couldn’t find anything existing that suited my needs, but unfortunately didn’t ever have the time to properly work on it.
That makes me think having something like “federated communities” could be neat, where a community on one instance could opt in to have content mirrored/visible from a community in another instance. In practice it would be something like subscribing to a community on one instance essentially being equivalent to subscribing to multiple communities on different instances, but if there is disagreement on e.g. moderation practices moderators might decide to “defederate” the communities.
A corporation running a nuclear reactor to train AIs might just be the most cyberpunk news headline I’ve ever seen.