I don't know what you are objecting to i.e. Social Media surprisingly not knowing a lot about us - or - the need only for relatively small amount of solid demo

I don't know what you are objecting to i.e. Social Media surprisingly not knowing a lot about us - or - the need only for relatively small amount of solid demo data. On the first point - they just don't know that much about us. That's what the whole post is about (!) They were lying advertisers ad to the probabilistic estimates of who we are. Go here: https://adssettings.google.com/authenticated?hl=en https://adssettings.google.com/authenticated?hl=en Google will show what they know about you if you have that on. It's not very accurate at all. It's very fuzzy. For me they have wrong age, a lot of wrong interests. So they surprisingly don't know a lot, just because someone clicks on an add ... that is not a lot of information - there's so many reasons we click on ads. Google thinks I'm into cars and I don't even drive, I hate cars! As for basic targeting - it's mostly what advertisers need. So age, education, income, zip code (or zip code classification), rough location would be great. Plus just a few, solid interests (real ones, not estimated) - and that would be a big step forward for ads. So yes - our privacy is fairly aggressively invaded at the same time they can only glean so much from it. Seems like a Paradox.