We blame faulty brakes for a car crash, or rain for our bad mood. This “merely causal” blame is usually seen as uninteresting. I argue that it is crucial for understanding the interpersonal blame with which we target ourselves and each other. The two are often difficult to distinguish, in a way that plagues philosophical discussions of blame. And interpersonal blame is distinctive, I argue, partly in its causal focus: its attention to a person as cause. I argue that this (...) causal focus helps explain several central characteristics of interpersonal blame: its tendency to exaggerate a person’s causal role, its weakening through attention to personal history or thoughts about determinism, its characteristic ‘force’ or ‘sting’, and our sense that blame is often harmful or unfair. I conclude by drawing out one implication of blame's causal focus: in a certain range of cases, blame is partly under our voluntary control. (shrink)