The Mozilla Developer Network site provides documentation not for only developers working on or with Mozilla code, but also for web developers working with open web technologies. I'll discuss various efforts for encouraging this diverse audience to participate in maintaining the documentation. Some of these are led by Mozilla, such as documentation sprints (both face-to-face and virtual) and "Wiki Wednesdays". Others are from external sources, such as other organizations, and the grassroots "Promote JS" campaign. I'll talk about how these strategies can be applied to other open source projects.