Nostr is whatever stuff you want really. I kinda use it like a notebook and don't care what people think about it really. Other times I'm trying to make people laugh or think with custom memes, for zaps of course.  

 I am giving it a try now.

I am also working with an L2 that is building stuff around Bitcoin so it is also a market study.

Is there any features for businesses account or anything like that? 

 Nah just npubs and zapvertising.  

 Zapvertising???

That could be worth something when trying to reach some users.