It is very difficult. In most cases people aren't affected. Those that might understand the need for privacy are those that lost their jobs because of posting o

It is very difficult. In most cases people aren't affected. Those that might understand the need for privacy are those that lost their jobs because of posting on social media or being naked in the wrong place. Currently the data that is shared between ad networks is rarely public, but embarrassing information could be found everywhere and what is considered as such might change with time. Is isn't just the access log of your head of state to youporn or something like that, it is also the info about trivial consumption choices that can come back at you. Legislators made it far worse because they demanded additional data to be saved for "security purposes". So not even here people are informed about the problem. On the contrary, we regularly have old farts making everything much worse. Frankly, those that believe they can save some bucks when they share their data probably aren't the best to understand the larger picture. The data is valuable for different purposes but it is also difficult to put a price tag on it.