I wish this wasn't downvoted, because it's important, especially in our industry, to discuss this common misunderstanding about the concept of privacy. It's no

I wish this wasn't downvoted, because it's important, especially in our industry, to discuss this common misunderstanding about the concept of privacy. It's not a matter of whether or not the information is publicly available. We spend a significant part of our lives in (semi-)public spaces where people are free to observe us. It's the collection, collation and use of that information that constitutes the violation of privacy. To put it simply: thousands of people may be able to observe me going from A to B on a regular basis, which is fine. But not even my wife has complete knowledge of all my daily comings and goings. I even have a high degree of privacy from the person I've spent the last few decades with. Compiling a complete record of all my public movements to the point where the owner of that database has better insight into my habits than even I myself have is a violation of that privacy. Unless I've given explicit permission to do so, and have a certain degree of control over what happens with that data. The bottom line is, even people who post "everything" on Facebook quite rightly expect a certain degree of privacy. Doing something in public does not equate surrendering your privacy.