@esther
What I will miss about Twitter was the use local governments made to alert users of closed roads, detoured transit, forest fires, tsunamis, storm warnings. Mastodon is not built for that purpose.
I can find interesting people to follow here: economists, historians, civil rights activists, climate scientists, animal researchers, Rabbis, poets, map aficionados, etc,.
This place will provide many niches. We have to help build it.