This paper explores the internal social structures among producers who are radically committed to openness through sharing technology and content online. It foregrounds that in these practices, openness and sharing are not only about creating open knowledge, public digital culture and technologies, but also trigger practices of self-control, discipline, and contestation over what is to be made public and how. The author argues that the ways in which these are negotiated have implications for the broader domain of cultural production online. The next two papers each look at the social structures promoted through open source practices by exploring how actors committed to them are trying to affect institutional politics.