As a Substack writer, my big question about how Notes evolves is

Will this be a shared conversation like Twitter where posters generally need to engage with “the conversation” to stay relevant. Or will it be more like a Substack where authors have more latitude to drive the focus.

Related to that: How much will different newsletter writers interact and form one conversation vs publish notes in parallel aimed at their specific audiences?

I get that these divides aren’t so simple. Newsletters respond to the conversation. And Twitter has many separate conversations at once. But there is more of a feeling on Twitter that people are riding a conversation whereas Substacks are better positioned to set their own agenda.