The bitcoinbitcoin -0.5% community’s new favorite social media network, Nostr, is designed to rival email, blogging, Instagram, Twitter, Discord and more. It’s not an app itself. Rather, Nostr is an innovation in how digital text can be sent and received. Anyone can join and anyone can build apps freely using the protocol.
https://www.forbes.com/sites/digital-assets/2023/04/11/how-to-get-started-with-nostr/