Privacy when it comes to tech tends to feel abstract. But it’s a highly personal, real concept.Our data reads like a diary—where we’ve been, who we’ve spoken to, what we’ve done in a day.When we use most free applications, we make a trade: our data in exchange for free usage. We're incentivized to make the trade because we want to use a beautiful, free application with a very useful piece of functionality. We sign terms and conditions that spell this trade out when we sign-up for the acc...