American Association of Law Libraries; American Library Association; Association of Research Libraries; Center for Democracy and Technology; Computer and Communications Industry Association; Consumer Electronics Association; Consumers Union; EDUCAUSE; Electronic Frontier Foundation; Entertainment Consumers Association; Essential Action; Home Recording Rights Coalition; Internet Archive; Knowledge Ecology International; NetCoalition; Public Knowledge; Special Libraries Association; U.S. Public Interest Research Group; Wikimedia Foundation(4/2/2009)
American Library Association; Association of Research Libraries; Broadband Service Providers Association; Center for Democracy & Technology; Computer and Communications Industry Association; Consumer Electronics Association; CTIA – The Wireless Association; Electronic Frontier Foundation; Free Press; Home Recording Rights Coalition; Internet Commerce Coalition; NetCoalition; Public Knowledge; TechAmerica; US Internet Industry Association; USTelecom(3/17/2009)