OpenContent

OpenContent is a description for any kind of content (ie articles, pictures, audio, video, whatever) that is published under a non-restrictive license that explicitly allows the copying of the information. (Examples are the GNUFreeDocumentationLicense, which is used by NuPedia.) But OpenContent also describes content that can be modified by anyone. (Of course not without prior review by other participating parties - but there is no closed group like a commercial encyclopedia publisher which is responsible for all the editing.)