And what is that data used for, if not targetted advertising? The data is a means to an end: the ability to provide advertisers with a way to reach very specif

And what is that data used for, if not targetted advertising? The data is a means to an end: the ability to provide advertisers with a way to reach very specific groups of people, and a way for advertising platforms to track not just the same user, but a very detailed user profile. Knowing what people's interests are is worth diddly-squat until you use that knowledge to push ads to them that are likely to resonate with them.