Looking at this twitter rate limit, @jack seems to be the real visionary with Nostr.

Nostr Public key:

npub1g87xmf27gdw7tj3h375plysl4068fd5lcvlyl8dljpskzxg6n5ts956564

Clients (front ends) to access Nostr:

iOS: Damus

Android: Amethyst

Web: Iris

nostr.com/clients