While perhaps not an issue unique to Strava, this is a fascinating look at the story our data tells about us. We think of Facebook using their massive data gath

While perhaps not an issue unique to Strava, this is a fascinating look at the story our data tells about us. We think of Facebook using their massive data gathering apparatus to build profiles of people for ad targeting. But even a more simple data point, where you are and who you're with, over a period of time reveals an enormous amount about our lives, and has can have large implications offline.