Several of the world's internet and media companies announced their joint support for a set of collaborative principles that enable the continued growth and development of user-generated content online and respect the intellectual property of content owners. The principles are intended to serve as a comprehensive set of guidelines to help user-generated content (UGC) services and content creators work together towards their collective goal of bringing more content to more consumers through legitimate channels. The principles acknowledge a collective respect for protecting copyrights and recognize that filtering technologies must be effective. The companies supporting these principles include CBS Corp., Dailymotion, Fox Entertainment Group, Microsoft Corp., MySpace, NBC Universal, Veoh Networks Inc., Viacom Inc., and The Walt Disney Company. The principles, which are available online, call for a broad range of constructive and cooperative efforts by copyright owners and UGC services.