Can I ask ... why?
I know ... to each his own ... different strokes ... and all that ...
But quite frankly ...
1. When I'm cycling or touring, I know where I am. I don't need an app to tell me. And if I don't know where I am, that's fine too. That has happened a small handful of times, and adds to the adventure.
3, 4 & 5. I have no interest in "adding friends", and I have absolutely no interest in where my friends are or tracking them. And I especially don't want anyone to be able to track me.
Maybe that's just me.
When I'm on a tour, I don't want anyone to know where I am with the exception of immediate family and certain select people at specific times.