Thanks. It was the relays section I was curious. Does adding more there make sense to guarantee propagation?
I can't, but I can explain the json file.
Copy mine.
Replace the "mike" with your own name.
Replace the string to the right with the hex of your npub.
You can obtain the hex of your npub here:
https://nostrcheck.me/converter/
Also replace the string at the top of the relay list with your hex npub.
Then replace the relays at the bottom with your primary relays.
Be careful not to change commas, quotes, brackets etc....
Upload the "nostr.json" file to your web server, making sure it is in the directory:
/.well-known
at the root of your HTML content
Then your NIP-05 will be:
Discussion
As I understand it, no. You should limit it to 3 or 4 of your primary relays.
Quality vs Quantity is the concept.