Nostr is funny. You can say what you want, but deleting is difficult.
Discussion
“nostr is for sharing what you want people go see”
The posts can be shared with an URL and the npub can be linked to via a qr code. Hmm. So the relays and the crawlers can manage publicity of posts and users through filters and reputation rankings. I believe that there will be some geographic variation in what kind of posts and users are seen where.