definition of Wikipedia
Free content, or free information, is any kind of functional work, artwork, or other creative content that meets the definition of a free cultural work. A free cultural work is one which has no significant legal restriction on people's freedom:
Free content encompasses all works in the public domain and also those copyrighted works whose licenses honor and uphold the freedoms mentioned above. Because copyright law in most countries by default grants copyright holders monopolistic control over their creations, copyright content must be explicitly declared free, usually by the referencing or inclusion of licensing statements from within the work.
Though a work which is in the public domain because its copyright has expired is considered free, it can become non-free again if the copyright law changes.
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Copyright is a legal concept, which grants the author or creator of a work legal rights to control the duplication and public performance of his or her work. In many jurisdictions, this is limited by a time period after which the works then enter the public domain. During the time period of copyright the author's work may only be copied, modified, or publicly performed with the consent of the author, unless the use is a fair use. Traditional copyright control limits the use of the work of the author to those who either pay royalties to the author for usage of the authors content, or limit their use to fair use. Secondly it limits the use of content whose author cannot be found. Finally it creates a perceived barrier between authors by limiting derivative works, such as mashups and collaborative content
The public domain is a range of creative works whose copyright has expired, or was never established; as well as ideas and facts[nb 1] which are ineligible for copyright. A public domain work is a work whose author has either relinquished to the public, or no longer can claim control over, the distribution and usage of the work. As such any person may manipulate, distribute, or otherwise utilize the work, without legal ramifications. A work in the public domain or released under a permissive licence may be referred to as "copycenter".
Copyleft is a play on the word copyright and describes the practice of using copyright law to remove restrictions on distributing copies and modified versions of a work. The aim of copyleft is to use the legal framework of copyright to enable non-author parties to be able to reuse and, in many licensing schemes, modify content that is created by an author. Unlike works in the public domain, the author still maintains copyright over the material, however the author has granted a non-exclusive license to any person to distribute, and often modify, the work. Copyleft licenses require that any derivative works be distributed under the same terms, and that the original copyright notices be maintained. A symbol commonly associated with copyleft is a reversal of the copyright symbol, facing the other way; the opening of the C points left rather than right. Unlike the copyright symbol, the copyleft symbol does not have a codified meaning.
Copyfree is a play on the word copyleft as well as the word copyright, describing a practice that contrasts both of them of using copyright law to remove restrictions on distributed copies and modified versions of a work imposed by both copyleft licensing and copyright itself. Where copyleft licensing generally requires that all derivative works be distributed under the terms of the same license, copyfree licensing generally requires only that the original work and direct modifications of it continue to be distributed under the terms of the same license. The Copyfree Initiative maintains the Copyfree Standard Definition, which establishes a specification to qualify a license for Copyfree Initiative certification of a copyfree license.
Projects that provide free content exist in several areas of interest, such as software, academic literature, general literature, music, images, video, and engineering.
Technology has reduced the cost of publication and reduced the entry barrier sufficiently to allow for the production of widely disseminated materials by individuals or small groups. Projects to provide free literature and multimedia content have become increasingly prominent owing to the ease of dissemination of materials that is associated with the development of computer technology. Such dissemination may have been too costly prior to these technological developments.
In media, which includes textual, audio, and visual content, free licensing schemes such as some of the licenses made by Creative Commons have allowed for the dissemination of works under a clear set of legal permissions. Not all of the Creative Commons’ licenses are entirely free: their permissions may range from very liberal general redistribution and modification of the work to a more restrictive redistribution-only licensing. Since February 2008, Creative Commons licenses which are entirely free carry a badge indicating that they are "approved for free cultural works". Repositories exist which exclusively feature free material provide content such as photographs, clip art, music, and literature,.
While extensive reuse of free content from one website in another website is legal, it is usually not sensible because of the duplicate content problem. Website that is largely an exact copy of another website ranks way lower in search engines, so every successful project tries to present something different.
Free software, often referred to as open source software, is a maturing technology with major companies utilising free software to provide both services and technology to both end users and technical consumers. The ease of dissemination has allowed for increased modularity, which allows for smaller groups to contribute to projects as well as simplifying collaboration.
Open source development models have been classified as having a similar peer-recognition and collaborative benefit incentives that are typified by more classical fields such as scientific research, with the social structures that result from this incentive model decreasing production cost.
Given sufficient interest in a given software component, by using peer-to-peer distribution methods, distribution costs of software may be minimized, removing the burden of infrastructure maintenance from developers. As distribution resources are simultaneously provided by consumers, these software distribution models are scalable, that is the method is feasible regardless of the number of consumers. In some cases, free software vendors may use peer-to-peer technology as a method of dissemination.
In general, project hosting and code distribution is not a problem for the most of free projects as a number of providers offer them these services for free.
Free content principles have been translated into fields such as engineering, where designs and engineering knowledge can be readily shared and duplicated, in order to reduce overheads associated with project development. Open design principles can be applied in engineering and technological applications, with projects in mobile telephony, small-scale manufacture, the automotive industry, and even agricultural areas.
Technologies such as distributed manufacturing can allow computer-aided manufacturing and computer-aided design techniques to be able to develop small-scale production of components for the development of new, or repair of existing, devices. Rapid fabrication technologies underpin these developments, which allow end users of technology to be able to construct devices from pre-existing blueprints, using software and manufacturing hardware to convert information into physical objects.
In academic work, free works are still a niche phenomenon, owing to the difficulty and cost of maintaining a fully qualified peer review process. Authors may see open access publishing as a method of expanding the audience that is able to access their work to allow for greater impact of the publication, or for ideological reasons. Groups such as the Public Library of Science and Biomed Central provide capacity for review and publishing of free works; though such publications tend to be limited to fields such as life sciences. Some universities, such as the Massachusetts Institute of Technology (MIT), have adopted open access publishing by default. In traditional journals, alternatives such as delayed free publications or charging researchers for open access publishing are occasionally used. Some funding agencies, such as the National Institutes of Health, require academic work to be published in the public domain as a grant requirement. Open content publication has been seen as a method of reducing costs associated with information retrieval in research, as universities typically pay to subscribe for access to content that is published through traditional means whilst improving journal quality by discouraging the submission of research articles of reduced quality.
Subscriptions for non-free content journals may be expensive to universities themselves, particularly noteworthy when coupled to the fact that the content in the scientific articles are generated and peer-reviewed by the university staff themselves at no cost to the publisher. This has led to disputes between publishers and some universities over subscription costs, such as the one which occurred between the University of California and the Nature Publishing Group.
For teaching purposes, some universities, including MIT, provide freely available course content, such as lecture notes, video resources and tutorials. This content is distributed via internet resources to the general public. Publication of such resources may be either by a formal institution-wide program, or alternately via informal content provided by individual academics or departments.
||This section may stray from the topic of the article. Please help improve this section or discuss this issue on the talk page. (May 2012)|
Under 17 U.S.C. § 105, works of the US government are not eligible for copyright. This has enabled tremendous innovation, and even tremendous private profit such as Garmin, which is based on free NASA's GPS (there are others, but only recently, such as the fully functional Russian GLONASS), and USGS map data. (few other countries provide their citizens with free access to survey data they must already finance for tax reasons.)
Widespread adoption of the Internet has made it feasible to distribute hitherto inaccessible government documentation directly to citizens from any location for minimal cost. This allows information on lawmaking, local and state government to be analysed by a government's constituents. Although previously information has been in the form of media releases for public relations purposes, documentation that may be of use to citizens and businesses has, in some jurisdictions, been mandated to be released by default. This is in contrast to laws such as the freedom of information act, or their local equivalent, which may make documentation available only on request, rather than mandate explicit publication. According to the Journal of Public Administration, such a stance has been cited as an aid to the reduction in complexity associated with government processes, as well as aiding a reduction in corruption.
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Lettris is a curious tetris-clone game where all the bricks have the same square shape but different content. Each square carries a letter. To make squares disappear and save space for other squares you have to assemble English words (left, right, up, down) from the falling squares.
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