Articles for traditional encyclopedias such as Encyclopædia Britannica are carefully and deliberately written by experts, lending such encyclopedias a reputation for accuracy. However, a peer review in 2005 of forty-two scientific entries on both Wikipedia and Encyclopædia Britannica by the science journal Nature found few differences in accuracy, and concluded that "the average science entry in Wikipedia contained around four inaccuracies; Britannica, about three." Reagle suggested that while the study reflects "a topical strength of Wikipedia contributors" in science articles, "Wikipedia may not have fared so well using a random sampling of articles or on humanities subjects." Others raised similar critiques. The findings by Nature were disputed by Encyclopædia Britannica, and in response, Nature gave a rebuttal of the points raised by Britannica. In addition to the point-for-point disagreement between these two parties, others have examined the sample size and selection method used in the Nature effort, and suggested a "flawed study design" (in Nature's manual selection of articles, in part or in whole, for comparison), absence of statistical analysis (e.g., of reported confidence intervals), and a lack of study "statistical power" (i.e., owing to small sample size, 42 or 4 × 101 articles compared, vs >105 and >106 set sizes for Britannica and the English Wikipedia, respectively).
YouTube began to implement its compliance approach in November 2019, in line with its settlement with the FTC. All channels must declare if their content is "made for kids", either as a blanket claim for their entire channel, or on a per-video basis. The company states that a video is considered "made for kids" if its primary audience is children, or is "directed" to children based on various factors as guidelines (even if they are not the primary audience), including use of child actors, "characters, celebrities, or toys that appeal to children", depictions of "activities that appeal to children, such as play-acting, simple songs or games, or early education", and poems, songs, and stories intended for children, among others. YouTube will employ machine learning to find videos that they believe are clearly "made for kids" and automatically mark them as such, but will not help or advise content creators for videos that fall into unclear categories, as this constitutes legal advice. In order to prevent data to be collected from minors without consent, videos marked as being "made for kids" were automatically reduced in functionality beginning on January 6, 2020. As a result, social and community features such as end screens and other widgets, notification functions, and comments are disabled, and videos can only be monetized with contextual advertising based on the video's metadata. Further, liability for failing proper marking channels or videos as "made for kids" would fall onto the channel owners, with the FTC able to issue up to $42,000 fines per infringing video, though the FTC clarified that the amount would be based on "a company’s financial condition and the impact a penalty could have on its ability to stay in business".
More InfoIn certain cases, all editors are allowed to submit modifications, but review is required for some editors, depending on certain conditions. For example, the German Wikipedia maintains "stable versions" of articles, which have passed certain reviews. Following protracted trials and community discussion, the English Wikipedia introduced the "pending changes" system in December 2012. Under this system, new and unregistered users' edits to certain controversial or vandalism-prone articles are reviewed by established users before they are published.
More InfoThe domains wikipedia.com and wikipedia.org were registered on January 12, 2001 and January 13, 2001 respectively, and Wikipedia was launched on January 15, 2001, as a single English-language edition at www.wikipedia.com, and announced by Sanger on the Nupedia mailing list. Wikipedia's policy of "neutral point-of-view" was codified in its first few months. Otherwise, there were relatively few rules initially and Wikipedia operated independently of Nupedia. Originally, Bomis intended to make Wikipedia a business for profit.
More InfoOn January 20, 2014, Subodh Varma reporting for The Economic Times indicated that not only had Wikipedia's growth stalled, it "had lost nearly ten percent of its page views last year. There was a decline of about two billion between December 2012 and December 2013. Its most popular versions are leading the slide: page-views of the English Wikipedia declined by twelve percent, those of German version slid by 17 percent and the Japanese version lost nine percent." Varma added that, "While Wikipedia's managers think that this could be due to errors in counting, other experts feel that Google's Knowledge Graphs project launched last year may be gobbling up Wikipedia users." When contacted on this matter, Clay Shirky, associate professor at New York University and fellow at Harvard's Berkman Center for Internet & Society indicated that he suspected much of the page view decline was due to Knowledge Graphs, stating, "If you can get your question answered from the search page, you don't need to click [any further]." By the end of December 2016, Wikipedia was ranked fifth in the most popular websites globally.
More InfoA 2007 study by researchers from Dartmouth College found that "anonymous and infrequent contributors to Wikipedia [...] are as reliable a source of knowledge as those contributors who register with the site". Jimmy Wales stated in 2009 that "[I]t turns out over 50% of all the edits are done by just .7% of the users ... 524 people ... And in fact, the most active 2%, which is 1400 people, have done 73.4% of all the edits." However, Business Insider editor and journalist Henry Blodget showed in 2009 that in a random sample of articles, most content in Wikipedia (measured by the amount of contributed text that survives to the latest sampled edit) is created by "outsiders", while most editing and formatting is done by "insiders".
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