Some influencers, creators, artists copy their tweets over word for word with direct links to their content and expect it to work. But this is a poor way to promote on nostr. They treat it as a backup, an afterthought and expect engagement.

There are no rules on what you share but people will respond very different if you’re active and a genuine person who talks to people, rather than simply using them to get eyeballs on your stuff.

It’s not a nostr rule, it’s the basis of any relationship building.

It's ok to share Substack links,

until Nostr has a suitable replacement 😏

Haven't used it myself, but there is:

https://npub.pro/

Seems like a nostr native way to post articles.