Who needs to know where you are?

Is location tracking building relationships? Or ruining them? Four in 10 U.S. adults share their locations with at least one person. But while it's convenient, is it also a violation of privacy? And who really needs to know where you are? We're getting into how location sharing became a norm, the pros and cons, and how to turn it off without making things weird. Brittany breaks it all down with…