[WoefullyInept]

This is why I cringe when I read articles like this.

To Quantcast she was just a cookie with some events that ultimately indicated she might like x and has shown interest in buying y.

[sroussey]

A cookie to take to live ramp and they tell you all the other “anonymous” ids you have, including those that can identify you. Which is how ads follow across devices, for example. But can be used for any purpose.