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Dariusz Jemielniak is a Wikipedian, Full Professor of Management at Kozminski University, and an entrepreneur (having established the largest online dictionary in Poland,, among others). 

Dariusz currently serves on Wikimedia Foundation Board of Trustees. In his academic life, he studies open collaboration movement (in 2014 he published "Common Knowledge? An Ethnography of Wikipedia" with Stanford University Press), media files sharing practices (among lawyers and free knowledge activists), as well as political memes' communities. 

He had visiting appointments at Cornell University (2004-2005), Harvard (2007, 2011-2012, 2015-2016, 2019-2020), MIT (2015-2016, 2019-2020), and University of California, Berkeley (2008), where he studied software engineers' workplace culture.

His current work is focused on collaborative society (2020, "Collaborative Society", MIT Press, co-author A. Przegalinska), a phenomenon of technology radically enhancing a natural trend of people to cooperate, visible in peer-to-peer production, uberization, online cooperatives, but also in meme culture, and better explaining the emerging change than the buzzword "sharing economy".

He is also continuously interested in combining qualitative and quantitative methods in digital society research (2020, "Thick Big Data", Oxford University Press).


Digital Trends

China’s coronavirus app will only inspire panic, experts say

Dariusz Jemielniak on a Chinese app that tracks the spread of the coronavirus.

Feb 11, 2020

Q&A: Misinformation and Coronavirus

We asked members of Berkman Klein’s Misinformation Working Group their thoughts about misinformation and the virus.

Jan 30, 2020


May 1, 2018 @ 12:00 PM

The Law and Ethics of Digital Piracy

Evidence from Harvard Law School Graduates

When do Harvard law students perceive digital file sharing (and piracy) as fine? More