In a semester-long, peer review assignment, undergraduates enrolled in a social psychology course wrote essays that applied course concepts to life experiences. Students anonymously posted essays for the entire class to view, and peers posted commentaries on classmates' essays using an online discussion board. Students rated the assignment as enjoyable and useful for improving their writing skills and conceptual understanding. For the instructor, the online nature of the assignment afforded all the benefits of peer review without increasing workload.