I have a suggestion for this spam problem that I think is simple. I don't know if it is compatible with the Nostr protocol. Let me briefly state it anyway: Can we share our posts in such a way that only "those I follow" and "those who follow me" can comment on them? 

 That does nothing to protect the Relays from abuse. ONly masking t he problem 

 Why we are acting like Nip-05 filter is impossible?