It was a decentralized community network of topic-focused servers that shared data between a user’s home server and peers. It’s how we learned cool things before the web.
Discussion
The first time I talked about Nostr to nostr:npub17uhxst5se65cceh40a54gmtr2zpkehnc7ku2qf38v740d3g6lpns97h5f8 he mentioned it reminded him of FidoNet.