[disgruntledphd2]

> Some of this sounds fairly hyperbolic to folks who haven't spent time in the industry - but I promise you this is very commonplace non-controversial data collection in the adtech space.

I spent well over half a decade in adtech, and while I don't dispute that this data is collected, I definitely don't think that it's particularly useful.

Fundamentally, the best information to use to predict what you'll buy is what you looked on on a site/app and what you've bought in the past.

The rest of the stuff you list out has really, really small effect sizes, it does make a difference if you're Facebook or Google (though the effects are still just as small) but given their scale, it's meaningful revenue.

Additionally, all of this data is incredibly sparse, so it may help at the margin, but definitely doesn't help overall. That's even assuming that the data can be reliably linked to an individual, which in most cases is definitely not true.

I think that you appear to be concerned more about the tracking than the marketing itself, is that a fair assessment of your position?