'Complex Worlds: Digital Culture, Rhetoric, and Professional Communication' is a collection of thought-provoking scholarly essays by teachers and industry practitioners in professional communication and technology-oriented fields. Scrupulously edited for a range of readers, the collection aims to help familiarize advanced students, teachers, and researchers in professional communication, computers and writing, literacy, and sister disciplines with key issues in digital theory and practice. An emphasis on the situations of and audiences for digital communication identifies 'Complex Worlds' as a rhetorical approach.  In an era when globalizing markets and digital technologies are transforming culture around the world, readers should find the collection both engaging and timely. The collections' twelve essays constitute a diverse and thematically coherent set of inquiries. Included are explorations of topics such as cyber activism, digital 'dispositio', citizen and open-source journalism, broadband affordances, XML, digital resumes, avant garde performance art, best pedagogical practices, and intercultural communication between East and West, North and South. The text is especially well suited for advanced courses in professional and applied writing, contemporary rhetorics, and digital culture.  The complexity highlighted in the collection's title is brought into relief by authors who address how the digital is daily unmaking our assumptions about the boundaries between work and school, the global and the local, the private and the public. 'Complex Worlds' offers readers an opportunity to build on their rhetorical awareness by expanding their understanding of the means, aims, and strategies of effective communication--today and in the future.