"It's the first anthropological study of an internet hive mind now entering its adolescence. The book pulls off a near-impossible double act, serving as both primer and detailed study on the habits of Wikipedians. It presents Wikipedia as a 'parahierarchy' thriving on its own conflicts, where even the dense catalogue of house rules is subject to reinterpretation . . . [Jemielniak's] depiction of its present and past shows how much the free encyclopaedia has already developed to become a worldwide movement."—Roisin Kiberd, Motherboard

"Jemielniak presents an evenhanded look at Wikipedia, showing how policy along with a balance of bureaucracy work well. The author explores the problems editors and the Wikimedia Foundation (the nonprofit organization supporting Wikipedia projects) are trying to work through. His criticism is constructive, focusing on situations and issues that have improved or can improve Wikipedia, including how founder Jimmy Wales's role has shifted . . . Methodology, glossary, and an extensive bibliography are included for Wikipedia novices and interested researchers . . . Recommended."—S. Marks, CHOICE

"Wikipedia is breathtakingly important, but it's new enough that it hasn't been studied much yet. This well-informed, thoughtful book from management professor and longtime Wikipedian Dariusz Jemielniak takes readers behind the scenes, exploring how Wikipedia works and why it matters. It's an important addition to the existing literature."—Sue Gardner, 2007-2013 Executive Director of Wikimedia Foundation

"This is a trailblazing study of Wikipedia—a phenomenon that is so much in our daily lives, while remaining mysterious to most of us. We should be thankful to Jemielniak for this study. As a seasoned user, an insider, and a scholar, his thorough account introduces us to Wikipedia's inner mechanisms, productive processes, quality controls, splendors, and miseries as a treasury of knowledge that is without precedence and, increasingly, without competition."—Zygmunt Bauman, University of Leeds

"Jemielniak confronts the fascinating politics of Wikipedia as an insider, relaying the healthy clash of cultures and values that ensues as people try to get it right. This is a wonderful, detailed account of Wikipedia's rules and hierarchies, culture of consensus, internal power structures, governance, and leadership—especially in its English and Polish incarnations."—Jonathan Zittrain, Harvard University and author of The Future of the Internet—And How to Stop It

"Of all the social artifacts we've built on top of the internet, Wikipedia is at once the strangest and the most familiar. Half a billion people visit every month, but almost no one knows how it works or why. Dariusz Jemielniak has written a thoughtful and multi-faceted account of Wikipedia's culture, contradictions, and challenges."—Clay Shirky, New York University and author of Cognitive Surplus: Creativity and Here Comes Everybody: The Power of Organizing Without Organizations

"Common Knowledge? is the first fully ethnographic study of Wikipedia culture. This thoughtful and intellectually provocative study sheds new light on a community behind the largest collaborative movement of humankind, and is a must-read for all interested in open collaboration movement."—Jimmy Wales, founder of Wikipedia