Its topics were the cultural and political potentials of free software, software technology, digital networks and media, and more generally information freedom and open cooperation in the creation and proliferation of knowledge.
The conference was interdisciplinary, and included among its attendees scientists, engineers, social researchers, scholars from the humanities, artists and activists.
The acronym "OS" stands for operating system (not open source).
Some of the topics were the future of Creative Commons, open music and the compensation of artists and European copyright legislation.
Larry Sanger announced an initial proposal of his project Citizendium.