It's just longform twitter really, so can be short fiction, essays, poems, actually even podcasts and whatnot. I suppose it's a nice away from twitter, I probably only really check in in twitter for a handful of people and I'm mostly interested in their sporadic longer form essays, their tweets are somewhat garnish but I can easily do without. In general there is maybe a move away from microblogging(?)

Makes sense that Elon felt such a big threat from substack.

What's the deal with the royal society? 🤔 

 I prefer discord and 4chan formats to microblogging. Less serious. More ephemeral. We show up, get high, call each other faggots, and raid some political or religious site. That's the fun internet. 

Royal society has high quality publications. Higher quality than Popular Mechanics.