From the settings page.

* crosspost discussions to nostr
* requires NIP-07 extension for signing
* we use your NIP-05 relays if set
* otherwise we default to these relays:
  * wss://nostrue.com/
  * wss://relay.damus.io/
  * wss://relay.nostr.band/
  * wss://relay.snort.social/
  * wss://nostr21.com/


No the other way around.

* You add your pubkey to SN settings.
* Change your settings to cross post
* Post a discussion on SN
* SN will ask your browser extension perm to cross post.  Alby or nost2x for example
* You post on SN is published to the relays as long form content.

kepford

nemo

Stacker Saloon

saloon

Not much to tell. It posts as a long form note type (forget the type number). I'm not sure how many clients support it but I'm using habla.news. I hadn't looked at habla in a while. Very cool client. Supports drafts which was kinda surprising to me but I'm guessing it posts to a private relay. Nostr has so much potential. Bullish on the protocol. Its more than a Twitter replacement.