This

That’s feature that can send your message to loads of people in your area

Like an open question to see if anyone relates or you like someone answer to start a conversation

This. This is shoutout.

You should already know. You just used it dumbass.

This

Idk

It sends a random message to people u dont follow

I HAVE NO CLUE

A shout-out is like where friends ask you to people in social media and etc.