A recent tell-all book by former Facebook insider Sarah Wynn-Williams, titled "Careless People," is blowing the lid on the sheer depravity of the social media giant's targeting machine. Wynn-Williams worked at Facebook — which subsequently changed its name to Meta a few years back — from 2011 to 2017, eventually rising to the role of public policy director.

As early as 2017, Wynn-Williams writes, Facebook was exploring ways to expand its ad targeting abilities to thirteen-to-seventeen-year-olds across Facebook and Instagram — a decidedly vulnerable group, often in the throes of adolescent image and social crises.

Though Facebook's ad algorithms are notoriously opaque, in 2017 The Australian alleged that the company had crafted a pitch deck for advertisers bragging that it could exploit "moments of psychological vulnerability" in its users by targeting terms like "worthless," "insecure," "stressed," "defeated," "anxious," "stupid," "useless," and "like a failure."

The social media company likewise tracked when adolescent girls deleted selfies, "so it can serve a beauty ad to them at that moment," according to Wynn-Williams. Other examples of Facebook's ad lechery are said to include the targeting of young mothers based on their emotional state, as well as emotional indexes mapped to racial groups, like a "Hispanic and African American Feeling Fantastic Over-index."