Back when Foursquare was a thing, Brad from Phone Losers of America would do pranks where he calls businesses and has them page someone who had shared their location.
I was thinking of a one person realizing they need some milk, so they see their spouse is at the grocery store already, or on their way home with one on the way. They can make that timely call if it makes sense, and if it doesn’t make sense based on the location, they can add it to the shopping list.
My sister shares her location with me and I will use it to know if it’s a good time to call. On Sunday she goes to church, but I don’t know when. I can check the location and see if she’s in a church or somewhere else, so I’m not calling when she can’t answer. I do the same thing with my dad, I will generally only call if I see he is at home, so I’m not interrupting an event he might be at.