http://paulgraham.com/twitter.html

Many apps had already started to use it for connectivity, but in the end Twitter failed to open up, even making the decision to shut down its API to competing client apps. Other attempts were made to replicate the Twitter as a protocol idea but did not succeed.

Nostr is everything that was wanted but more, with Bitcoin/LN having solved internet-native payments, a holy grail computer science breakthrough that was not available in 2006 when this stuff was being conceived.

Nostr is not a Twitter clone. It’s a base layer protocol where many types of apps with social behaviour can be built. Telegram, Facebook Groups, MetaMask-like web extensions for authentication and payments, and an ability for a user to be validated through a history of behaviour. And much more not yet conceived.