This was surfaced in Sarah Wynn-Williams’ book.

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.”

Facebook Allegedly Detected When Teen Girls Deleted Selfies So It Could Serve Them Beauty Ads