-\item {[Paper Presentation]} ```Accounting' for Transaction Costs in Online Collective Action.'' 7$^\mathrm{th}$ International Workshop on Network Theory: Peer Production Networks (ANN-SONIC-NICO 2015). Department of Communication, Northwestern University. Evanston, Illinois. 2015-10-30.
-\item {[Paper Presentation]} ```Accounting' for Transaction Costs in Online Collective Action.'' Wikia Inc., San Francisco, California. 2015-10-18.
-\item {[Paper Presentation]} ```Accounting' for Transaction Costs in Online Collective Action.'' Wikimania 2015. Mexico City, Mexico. 2015-07-18.
-\item {[Lecutre and Discussion Facilitation]} ``Missing Voices on Wikipedia.'' With Monika Sengul-Jones. Center on Communication, Difference, and Equity, University of Washington. 2015-04-22.
-\item {[Lecture]} ``Volunteer Mobilization in Peer Production.'' Department of Computer Science, University of California Santa Barbara. 2015-04-16.
-\item {[Lecture]} ``Volunteer Mobilization in Peer Production.'' University of Milan, Milan, Italy. 2015-03-28.
-\item {[Lecture and Q\&A]} Discussion of The Internet’s Own Boy. Workshop on Privacy, Surveillance, and Activism, Erasmus Research Centre for Media, Communication and Culture, Erasmus University, Rotterdam, The Netherlands. 2015-03-24.
-\item {[Paper Presentation]} ``Access Without Empowerement.'' Workshop on Privacy, Surveillance, and Activism. Erasmus Research Centre for Media, Communication and Culture, Erasmus University, Rotterdam, The Netherlands. 2015-03-24.
-\item {[Panel]} Discussion of \emph{The Internet's Own Boy}. Information \& Society Center, Information School, University of Washington. 2014-11-24.
-\item {[Lecture]} ``Understanding Collaborative Creativity in Scratch.'' Center for Data Science, University of Washington, Tacoma. 2014-11-19.
-\item {[Lecture]} ``Creativity Without Law in Remixing.'' Conference on ``Creativity Without Law.'' Case Western University School of Law. 2014-11-07.
-\item {[Paper Presentation]} ``Access Without Empowerement.'' Wikimania 2014. London, UK. 2014-08-09.
-\item {[Invited Expert Participant]} Data and Digital Methods BarCamp. ENSCI \& Medialab, Science Po, Paris, France. 2014-06-27.
-\item {[Lecture]} ``Volunteer Mobilization in Peer Production.'' Medialab, Sciences Po, Paris, France. 2014-06-25.
-\item {[Lecture and Workshop Facilitation]} ``Remixing Research and Scratch Data.'' Scratch Data Summit, MIT Media Lab, Cambridge, Massachusetts. With Andrés Monroy-Hernández. 2014-03-21.
-\item {[Lecture]} ``Volunteer Mobilization in Peer Production.'' DUB Seminar, University of Washington. 2014-01-08.
-\item {[Paper Presentation]} ``Laboratories of oligarchy? How the iron law extends to peer production.'' ZEW/KMRC Workshop: User behavior and content generation on Wikipedia. ZEW. Mannheim, Germany. 2013-11-09.
-\item {[Paper Presentation]} ``Laboratories of oligarchy? How the iron law extends to peer production.'' MIT Economic Sociology Working Group. 2013-05-08.
-\item {[Paper Presentation]} ``Laboratories of oligarchy? How the iron law extends to peer production.'' Harvard Cooperation Group, Berkman Center, Harvard. 2013-04-16.
-\item {[Paper Presentation]} ``Laboratories of oligarchy? How the iron law extends to peer production.'' Center for Information Technology Policy, Princeton. 2013-04-11.
-\item {[Lecture]} ``Failures of Collective Action.'' School of Cognitive Science, Hampshire College. 2013-04-10.
-\item {[Lecture]} ``Failures of Collective Action.'' Department of Communication, University of Washington. 2012-10-26.
-\item {[Lecture]} ``Failures of Collective Action.'' The Future of Security: Ethical Hacking, Big Data, and the Crowd. Parsons Institute for Information Mapping, The New School. New York, New York. 2012-10-24.
-\item {[Paper Presentation]} ``Almost Wikipedia.'' Microsoft Research, Cambridge, Massachusetts. 2012-08-13.
-\item {[Paper Presentation]} ``Almost Wikipedia.'' Wikimania 2012, George Washington University, DC. 2012-07-14.
-\item {[Lecture]} ``Can can social awards create better wikis?'' Wikimania 2012, George Washington University, Washington, DC. 2012-07-12.
-\item {[Keynote Lecture]} ``When peer production works: Learning from failures, to improve collaboration''. Wikipedia Academy 2012, Freie Universität, Berlin. 2012-06-29.
-\item {[Paper Presentation]} ``Is volunteer labor a fixed and finite resource? Evidence from peer production.'' MIT Economic Sociology Working Group. 2012-04-24.
+\item {[Paper Presentation]} ``The Hidden Costs of Requiring Account Creation: Evidence from Peer Production.'' With Aaron Shaw. Workshop and Lecture Series on the Law \& Economics of Innovation, ETH Zurich, Center for Law \& Economics, Department of Humanities, Social and Political Science, November 15, 2016.
+\item {[Paper Presentation]} ``The Wikipedia Adventure: Field Evaluation of an Interactive Tutorial for New Users.'' With Aaron Shaw. Workshop and Lecture Series on the Law \& Economics of Innovation, ETH Zurich, Center for Law \& Economics, Department of Humanities, Social and Political Science, November 14, 2016.
+\item {[Workshop]} ``Scratch Community Blocks Workshop.'' With Sayamindu Dasgupta. Scratch Conference, MIT Media Lab, Cambridge, Massachusetts, August 5, 2016.
+\item {[Lecture]} ``Using High Performance Computing for Social Computing Research.'' University of Washington HPC Club, Data Science Studio, University of Washington, Seattle, Washington, May 12, 2016.
+\item {[Paper Presentation]} ``The Hidden Costs of Requiring Account Creation: Evidence from Peer Production.'' Voice, Technology \& Impact Workshop, Department of Communication, University of Washington, Seattle, May 6, 2016.
+\item {[Paper Presentation]} ``Reflecting on Empirical Peer Production Research.'' With Aaron Shaw. 7$^\mathrm{th}$ International Workshop on Network Theory: Peer Production Networks (ANN-SONIC-NICO 2015). Department of Communication, Northwestern University. Evanston, Illinois, October 30, 2015.
+\item {[Paper Presentation]} ```Accounting' for Transaction Costs in Online Collective Action.'' Wikia Inc., San Francisco, California, October 18, 2015.
+\item {[Paper Presentation]} ```Accounting' for Transaction Costs in Online Collective Action.'' Wikimania 2015. Mexico City, Mexico, July 18, 2015.
+\item {[Lecture and Discussion Facilitation]} ``Missing Voices on Wikipedia.'' With Monika Sengul-Jones. Center on Communication, Difference, and Equity, University of Washington, April 22, 2015.
+\item {[Lecture]} ``Volunteer Mobilization in Peer Production.'' Department of Computer Science, University of California Santa Barbara, April 16, 2015.
+\item {[Lecture]} ``Volunteer Mobilization in Peer Production.'' University of Milan, Milan, Italy, March 28, 2015.
+\item {[Lecture and Q\&A]} Discussion of \textit{The Internet’s Own Boy}. Workshop on Privacy, Surveillance, and Activism, Erasmus Research Centre for Media, Communication and Culture, Erasmus University, Rotterdam, The Netherlands, March 24, 2015.
+\item {[Paper Presentation]} ``Access Without Empowerement.'' Workshop on Privacy, Surveillance, and Activism. Erasmus Research Centre for Media, Communication and Culture, Erasmus University, Rotterdam, The Netherlands, March 24, 2015.
+\item {[Panel]} Discussion of \emph{The Internet's Own Boy}. Information \& Society Center, Information School, University of Washington, November 24, 2014.
+\item {[Lecture]} ``Understanding Collaborative Creativity in Scratch.'' Center for Data Science, University of Washington, Tacoma, November 19, 2014.
+\item {[Lecture]} ``Creativity Without Law in Remixing.'' Creativity Without Law Conference, Case Western University School of Law, November 7, 2014.
+\item {[Workshop Organization \& Lecture]} ``Open Source Comes to Campus.'' University of Washington, November 16, 2014.
+\item {[Paper Presentation]} ``Access Without Empowerement.'' Wikimania 2014, London, UK. August 9, 2014.
+\item {[Invited Expert Participant]} Data and Digital Methods BarCamp, ENSCI \& Medialab, Science Po, Paris, France, June 27, 2014.
+\item {[Lecture]} ``Volunteer Mobilization in Peer Production.'' Medialab, Sciences Po, Paris, France. June 25, 2014.
+\item {[Lecture and Workshop Facilitation]} ``Remixing Research and Scratch Data.'' With Andrés Monroy-Hernández. Scratch Data Summit, MIT Media Lab, Cambridge, Massachusetts, March 21, 2014.
+\item {[Lecture]} ``Volunteer Mobilization in Peer Production.'' DUB Seminar, University of Washington, January 8, 2014.
+\item {[Paper Presentation]} ``Laboratories of Oligarchy? How the Iron Law Extends to Peer Production.'' ZEW/KMRC Workshop: User behavior and content generation on Wikipedia, ZEW, Mannheim, Germany, November 9, 2013.
+\item {[Paper Presentation]} ``Laboratories of Oligarchy? How the Iron Law Extends to Peer Production.'' MIT Economic Sociology Working Group, MIT, Cambridge, Massachusetts, May 8, 2013.
+\item {[Paper Presentation]} ``Laboratories of Oligarchy? How the Iron Law Extends to Peer Production.'' Harvard Cooperation Group, Berkman Center for Internet and Society, Harvard, Cambridge, Massachusetts, April 16, 2013.
+\item {[Paper Presentation]} ``Laboratories of Oligarchy? How the Iron Law Extends to Peer Production.'' Center for Information Technology Policy, Princeton, April 11, 2013.
+\item {[Lecture]} ``Failures of Collective Action.'' Cognitive Science Colloquium, School of Cognitive Science, Hampshire College, April 10, 2013.
+\item {[Lecture]} ``Failures of Collective Action.'' Department of Communication, University of Washington, October 26, 2012.
+\item {[Lecture]} ``Failures of Collective Action.'' The Future of Security: Ethical Hacking, Big Data, and the Crowd, Parsons Institute for Information Mapping, The New School, New York, New York, October 24, 2012.
+\item {[Paper Presentation]} ``Almost Wikipedia: What Eight Early Online Collaborative Encyclopedia Projects Reveal About the Mechanisms Of Collective Action.'' Microsoft Research, Cambridge, Massachusetts, August 13, 2012.
+\item {[Paper Presentation]} ``Almost Wikipedia: What Eight Early Online Collaborative Encyclopedia Projects Reveal About the Mechanisms Of Collective Action.'' Wikimania 2012, George Washington University, DC, July 14, 2012.
+\item {[Lecture]} ``Can Can Social Awards Create Better Wikis?'' Wikimania 2012, George Washington University, Washington, DC, July 12, 2012.
+\item {[Keynote Lecture]} ``When Peer Production Works: Learning from Failures to Improve Collaboration.'' Wikipedia Academy 2012, Freie Universität, Berlin, June 29, 2012.
+\item {[Paper Presentation]} ``Is Volunteer Labor a Fixed and Finite Resource? Evidence from Peer Production.'' With Aaron Shaw. MIT Economic Sociology Working Group, MIT, Cambridge, Massachusetts, April 24, 2012.