This book examines how ordinary users review cultural products online, ranging from books to films and other art objects to consumer products. The book maps different communities--in institutional and non-institutional settings--which intersect with the genre of review, especially in the social web where reviewing is conducted on platforms such as Instagram, YouTube and Vimeo. The book, drawing on the key concepts of cultural intermediation, platformized cultural production and post-professionalism, looks at user-generated content in lifestyle communities beyond the binary of professional and amateur production. Maarit Jaakkola is co-director of Nordicom, a centre for Nordic media research at the University of Gothenburg, Sweden. She is also Associate Professor at the Department of Journalism, Media and Communication (JMG) at the University of Journalism.