Building upon a book that was published by Philippe Aigrain earlier in French (Internet & Création: comment reconnaître les échanges sur internet en finançant la création, InLibroVeritas, October 2008), Sharing: Culture and the Economy in the Internet Age takes into account comments, criticism and suggestions for improvement received from many readers.

The ideas developed in Sharing could not mature in isolation: they are rooted in collective environments. Invaluable inspiration and support were provided by Jérémie Zimmermann and all the participants in La Quadrature du Net, by Juan-Carlos de Martin and the members of the COMMUNIA Network on the Digital Public Domain, by researchers in the Berkman Center for Internet & Society and the NEXA Center for Internet & Society, members of the Forum d’Action Modernités, and participants in the Free Culture Forum and the Free Culture Research Conferences.

Some of the findings presented in this book would have been impossible without the large-scale data collection and publication efforts conducted by researchers such as Frédéric Aidouni, Mathieu Latapy and Clémence Magnien of the Complex Networks team of University Paris 6, and Bodó Balázs and Zoltán Lakatos of University of Budapest.

Many individuals deserve a special mention: Sharing would not be what it is without Fernando Anitelli, Phil Axel, Raphaël Badin, Maja Bogotaj, Yochai Benkler, Juan Branco, Paulo Branco, Jean-Gabriel Carasso, Aline Carvalho, Mario Ciurcina, Roberto di Cosmo, Milad Doueihi, Mélanie Dulong-de-Rosnay, Christophe Espern, William Fisher, Vera Franz, Mayo Fuster-Morell, Volker Grassmuck, Jim Griffin, Peter Jenner, Gaëlle Krikorian, Hervé Le Crosnier, Olivier Lejade, Lawrence Lessig, Simona Levi, James Love, Eben Moglen, Francis Muguet†, Charles Nesson, Jérémie Nestel, François Pellegrini, Valérie Peugeot, Rufus Pollock, Manon Ress, Marco Ricolfi, Gérald Sédrati-Dinet, Tom Smith, Richard Stallman, Malte Spitz, Peter Sunde, Félix Tréguer and Laurence Vandewalle. We remain of course solely responsible for the analysis and proposals developed in this book.

Mireille, Louise, Tom, Jonathan, and many friends created an environment without which this book would not exist.

Sharing found its home in the publishing world at Amsterdam University Press, an open access friendly publisher staffed with author-friendly editors. We are grateful to Saskia de Vries, Jeroen Sondervan, Chantal Nicolaes, Paul Penman and Alison Fisher for transforming our text into a published book and open access monograph.

This book was drafted and laid out using the Lyx, Latex, and JabRef free software. Graphical illustrations were produced with the Inkscape and Gimp free software or from our own software in Python. Our software and datasets can be downloaded from the book site at On the same site, the reader can also run our models with adjusted parameters and upload datasets in order to run our algorithms for the study of diversity of attention.