> Browsers can block that quite easily. How? That's not possible. Facebook knows where you are and what you're doing, etc, without you even having a computer o

> Browsers can block that quite easily. How? That's not possible. Facebook knows where you are and what you're doing, etc, without you even having a computer or smartphone at all. Your friends or their friends will already upload your address, phone number, contact info, etc. When you go out in public and you get caught in the background of someone else's photo, that you might not even know is being taken? They might post that to FB or Instagram, and then boom, FB gets another data point to analyze and find out where you go and what your habits are. "Browsers" can't block what Facebook does to track users, not even close. That would be a trillion-dollar-invention. > And people are becoming more aware of how that happens, Are they? I don't think they are. I think people are grossly misinformed about how the data is collected. > and developing tools to control and expose that Who is? I know of no serious efforts to meaningfully reduce the data FB is able to collect. > and at the end of the day people can choose to use it or not. No they cannot. None of these services or companies are opt-in. You have profiles with them long before you sign up. You are being manipulated and studied and watched and you have no choice about it.