[davidron]

The name and address is valuable because it can be matched to offline behavior through a bill you pay or rewards membership you are enrolled in to further enrich the data associated with id_8z6748dxzh and combine it with your shopping history at Macy's and Safeway, for instance. This is even more valuable when combined with your cellular bill.

I've work in ad tech,and with CDPs for nearly 20 years.

[brookst]

Why wouldn’t they just buy name and address in bulk from one of the many providers that has essentially all of our info?

[heysammy]

It's easier to target Hackernewses by advertising on their own site.