For me the trick seems to be to get people to treat the net as if it was downtown during high noon.
Just because you are sitting there typing in your undies do not mean that what you post has the same privacy.
Also the worrying bit is not so much the data, as the actions taken on their basis.
Denying someone a job because they have a few photos of them enjoying a colorful drink is just the tip of the iceberg.
What about the day a kill shot is approved because the computer says the face is above a certain likelihood of being some big bad terrorist? At 70% there is still a 1 in 4 chance of being wrong.
Employers routinely subject applicants to personality tests, IQ tests, fitness tests for jobs that have nothing to do with manual labor (essentially age/gender discrimination), background checks, credit checks even when the job doesn't involve handling money, and yes, looking them up on social media. Do people really want to work for these places? Yes, because they need to pay their rent, and don't have the nestegg of a well-paid Silicon Valley software developer, or recruiters chasing them to offer them work.
The sense of free will is an illusion of physics and consciousness; choices are made by quasi-deterministic electrochemical processes before our conscious minds are ever aware of them.
Just because you are sitting there typing in your undies do not mean that what you post has the same privacy.
Also the worrying bit is not so much the data, as the actions taken on their basis.
Denying someone a job because they have a few photos of them enjoying a colorful drink is just the tip of the iceberg.
What about the day a kill shot is approved because the computer says the face is above a certain likelihood of being some big bad terrorist? At 70% there is still a 1 in 4 chance of being wrong.