This collection investigates the social phenomenon of passive-aggressive communication through the lens of anonymous, written notes left in public and private spaces. Author Kerry Miller curates a selection of real-world correspondence submitted to the passiveaggressivenotes.com website, providing a sociological snapshot of modern frustration. The book argues that these notes serve as a unique, albeit often hostile, outlet for individuals navigating the unspoken rules of communal living and workplace etiquette.

The book functions as a lighthearted, observational study of human behavior that highlights the absurdity of indirect confrontation. Its structure provides an accessible look at the ways people attempt to enforce social norms in an increasingly anonymous world.