Wikipedia is a free online encyclopedia that anyone can edit founded in 2001 by Jimmy Wales.

An online encyclopaedia, which crowd-sources authors to input content, edit and maintain editorial style. It is a non-profit organization based in San Francisco, California and was founded by Jimmy Wales.

Shift to online

Wikipedia effectively marked the end to the Encyclopaedia Britannica series and Microsoft's Encarta, which were CD rom based encyclopaedias, and even books on the periphery of the reference category, such as the venerable Who's Who series, mostly through attrition and as demand fell off in favour of online solutions such as Wikipedia.

Bias accusations

Wikipedia has been accused of bias over the years by companies such as the Harvard Business Review, Cracked and Gab.

Andrew Torba, CEO of Gab, has criticized Wikipedia many times both on his personal Gab account and the company's official Twitter account for their characterization of Gab as an alt-right and white supremacist populated website. They have stated that they believe their article is edited by Antifa members.


April 2019

18 percent of 1.6 million biographies on the English-language Wikipedia were of women.



Jimmy Wales


Larry Sanger


Further reading


A systemic and cognitive view on collaborative knowledge building with wikis

Ulrike Cress, Joachim Kimmerle


Can History Be Open Source? Wikipedia and the Future of the Past

Roy Rosenzeig


Decentralization in Wikipedia Governance

Andrea Forte, Vanesa Larco, Amy Bruckman


Early Prediction of Movie Box Office Success Based on Wikipedia Activity Big Data

Márton Mestyán, Taha Yasseri, János Kertész


Exploiting Wikipedia as external knowledge for document clustering

Xiaohua Hu, Xiaodan Zhang, Caimei Lu, E.K. Park, Xiahua Zhou


Group Size and Incentives to Contribute: A Natural Experiment at Chinese Wikipedia

Xiaoquan (Michael) Zhang, Feng Zhu


Harnessing the wisdom of crowds in wikipedia

Aniket Kittur, Robert Kraut


He says, she says

Aniket Kittur, Bongwon Suh, Bryan Pendleton, Ed Chi


How and why do college students use Wikipedia?

Sook Lim


Information quality work organization in wikipedia

Besiki Stvilia, Michael B. Twidale, Linda C. Smith, Les Gasser


Membership Turnover and Collaboration Success in Online Communities: Explaining Rises

Sam Ransbotham, Gerald Kane


Preferential attachment in the growth of social networks: The internet encyclopedia Wikipedia

A. Capocci, V. D. P. Servedio, F. Colaiori, L. S. Buriol, D. Donato, S. Leonardi, G. Caldarelli


Quantifying Wikipedia Usage Patterns Before Stock Market Moves

Helen Susannah Moat, Chester Curme, Adam Avakian, Dror Kenett, Eugene Stanley, Tobias Preis



Olena Medelyan, David Milne, Catherine Legg, Ian Witten


Scope, Completeness, and Accuracy of Drug Information in Wikipedia

Kevin A Clauson, Hyla H Polen, Maged N Kamel Boulos, Joan H Dzenowagis


Seeking Health Information Online: Does Wikipedia Matter?

Michael Laurent, Tim Vickers


Semantic Wikipedia

Markus Krötzsch, Denny Vrandecic


Toward an epistemology ofWikipedia

Don Fallis


Wikipedia: A Key Tool for Global Public Health Promotion

James Heilman, Eckhard Kemmann, Michael Bonert, Anwesh Chatterjee, Brent Ragar, Graham Beards, David Iberri, Mathew Lodge, Andrea Vondracek, Jacob de Wolff, Casimir Liber, Samir Grover, Tim Vickers, Bertalan Mesko, Michael Laurent


Wisdom of the crowd or technicity of content? Wikipedia as a sociotechnical system

Sabine Niederer, José van Dijck


YAGO: A Large Ontology from Wikipedia and WordNet

Fabian Suchanek, Gjergji Kasneci, Gerhard Weikum


Documentaries, videos and podcasts


How to Edit a Wikipedia Article

April 15, 2010

Is Wikipedia a Credible Source?

October 4, 2013

Jimmy Wales: How a ragtag band created Wikipedia

January 16, 2007

Meet The People Who Devote Their Time To Editing Wikipedia [INSIGHTS]

January 27, 2017

The History of Wikipedia (in two minutes)

December 2, 2009

Wikipedia - The Greatest Collection of Human Knowledge

May 12, 2018

Wikipedia: Jimmy Wales | How I Built This with Guy Raz on acast

26 February 2018

Wikipedia: Jimmy Wales | How I Built This with Guy Raz on acast

26 February 2018




Hilda Bastian
July 1, 2020
Two new research papers try to shed some light on a popular theory, but the evidence is still very weak--and could point to confirmation bias.
Sarah Perez
June 11, 2020
Facebook is testing a new feature that aims to keep users inside its platform when they're looking for factual information they would otherwise turn to Google or Wikipedia to find. The company confirmed to TechCrunch it's now piloting an updated version of Facebook Search that displays factual information when users search for topics like public [...]
BBC News
May 23, 2020
BBC News
Female and LGBTQ editors of the online encyclopaedia have complained of harassment.
Vivek Barui
April 30, 2020
Zee News
Notably, the mistakes on Wikipedia are not considered to be Googles responsibility.
Sierra Garcia
February 20, 2020
Floods have been devastating the developing world -- but you can't learn much about them on the world's most popular online reference.
Richard Cooke
February 17, 2020
People used to think the crowdsourced encyclopedia represented all that was wrong with the web. Now it's a beacon of so much that's right.
By Joe Pinkstone For Mailonline
February 13, 2020
Mail Online
The technology was created at MIT and would allow for efficient and accurate updates to Wikipedia's 52 million articles.
Stephanie Mlot
February 13, 2020
A system created by MIT researchers automatically updates factual inconsistencies in Wikipedia articles. The text-generating AI pinpoints and replaces specific information in relevant sentences, an otherwise time-consuming task for individual editors. And it ...
Joshua Howgego
February 5, 2020
New Scientist
Our largest encyclopedia overwhelmingly recognises the achievements of white men. For physicist Jess Wade, fighting this bias has been an uphill battle
February 1, 2020
Wikipedia is a free online encyclopedia, created and edited by volunteers around the world and hosted by the Wikimedia Foundation.
Press Trust of India
January 31, 2020
Wikipedia is a free online encyclopedia, created and edited by volunteers around the world and hosted by the Wikimedia Foundation
Manish Singh
January 23, 2020
Wikipedia has surpassed a notable milestone today: The English version of the world's largest online encyclopedia now has over six million articles. The feat, which comes roughly 19 years after the website was founded, is a testament of "what humans can do together," said Ryan Merkley, Chief of Staff at Wikimedia, the non-profit organization that [...]
BBC News
January 16, 2020
BBC News
A top court rules the country's censorship of Wikipedia violated freedom of expression.
December 27, 2019
The Economic Times
In the letter, Amanda Keton, General Counsel, Wikimedia Foundation said the new draft rules have not been made public even after a year since official consultations on the draft were completed.
Mihir Zaveri
December 26, 2019
The country blocked the site in 2017 after Wikipedia refused to remove pages that the government found offensive, including references to its relationship with terrorists and Syrian militants.
Phoebe Southworth
December 7, 2019
The Telegraph
A physicist has become embroiled in a sexism row with Wikipedia after profiles she created for female scientists were removed because they were "not notable enough".
BBC News
November 18, 2019
BBC News
Jimmy Wales says his new social network, WT:Social, now has more than 160,000 members.
Jordan Minor
November 15, 2019
Is Wikipedia the last honest place on the internet? Yes, the online encyclopedia isn't totally free from malicious internet liars. But for the most part Wikipedia has provided tons of accurate information to ...
Sahar Esfandiari
November 7, 2019
Business Insider
A project set in motion to create the Russian version of Wikipedia has been allocated a budget of $27 million and will be completed from 2020-2022.


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