I used to wonder "What would Social Networking look like if it were based on self-hosted pages written with microformats like h-card[0]?", but presumably the answer is "a privacy nightmare" (even more so than existing social networks).
Perhaps a better answer to that question is "the Fediverse", which is based on ActivityPub. Unfortunately, though, there still seem to be open questions about how well/widely the Fediverse supports something like "circles" (the concept that Google Plus had) for selectively sharing content with different groups of people.
Perhaps a better answer to that question is "the Fediverse", which is based on ActivityPub. Unfortunately, though, there still seem to be open questions about how well/widely the Fediverse supports something like "circles" (the concept that Google Plus had) for selectively sharing content with different groups of people.
[0] http://microformats.org/wiki/h-card
[1] https://rusingh.com/fediverse-google-plus-circles/