- -Wikipedia (Wikipedia.org)
- Provides a "self-correcting" encyclopedia. Visitors can add or correct information through an editing window. The changes are then assessed to ensure that only appropriate and correct information stays on the site. According to a BBC News article dated February 9, 2006, "A December 2005 study by the British journal Nature found it was about as accurate on science as the Encyclopaedia Britannica." 02-06
- 05-08-07 Wikipedia to Seek Proof of Credentials (MSNBC News)
- "Following revelations that a high-ranking member of Wikipedia's bureaucracy used his cloak of anonymity to lie about being a professor of religion, the free Internet encyclopedia plans to ask contributors who claim such credentials to identify themselves." 05-07
- Citizendium, a Wikipedia Competitor (MSNBC News)
- "Unlike Wikipedia, Citizendium's volunteer contributors will be expected to provide their real names. Experts in given fields will be asked to check articles for accuracy." 03-07
- Comparison of Wikipedia and Encyclopaedia Britannica (Nature.com)
- Nature Magazine carried out a peer review of the Encyclopaedia Britannica and Wikipedia. "The exercise revealed numerous errors in both encyclopaedias, but among 42 entries tested, the difference in accuracy was not particularly great: the average science entry in Wikipedia contained around four inaccuracies; Britannica, about three." 11-06
- Comparison of Wikipedia and Encyclopaedia Britannica - A Reply By Britannica.com (Britannica.com)
- Nature Magazine carried out a peer review of the Encyclopaedia Britannica and Wikipedia. In this article, Britannica.com contests the findings. 04-07