- October 14, 2005
Alan Mcilwraith was exposed as a fake war hero through a Wikipedia page.
- June 1, 2005
The Seigenthaler controversy caused Brian Chase to resign from his employment, after his identity was ascertained by Daniel Brandt of Wikipedia Watch. Following this, the scientific journal Nature undertook a peer reviewed study to test articles in Wikipedia against their equivalents in Encyclopædia Britannica, and concluded they are comparable in terms of accuracy. Britannica rejected their methodology and their conclusion. Nature refused to release any form of apology, and instead asserted the reliability of its study and a rejection of the criticisms
- January 14, 2005
The fake charity QuakeAID, in the month following the 2004 Indian Ocean earthquake, attempted to use a Wikipedia page for promotional purposes.
- November 14, 2001
Wales announced that advertising would soon begin on Wikipedia, starting in early or mid-2002. Instead, in early 2002, Chief Editor Larry Sanger was fired, since his salary was the largest expense in the operation of Wikipedia. By September 2002, Wales had publicly stated: "There are currently no plans for advertising on Wikipedia." By June 2003, the Wikimedia Foundation was formally incorporated. The Foundation is explicitly against paid advertising; although, it does "internally" advertise Wikimedia Foundation fundraising events on Wikipedia. As of 2013, the by-laws of the Wikimedia Foundation do not explicitly prohibit the adoption of a broader advertising policy, if such an action is deemed necessary—such by-laws are subject to vote
- June 14, 2001
The congressional aides biography scandals were publicized, whereby several political aides were caught trying to influence the Wikipedia biographies of several politicians. The aides removed undesirable information (including pejorative quotes, or broken campaign promises), added favorable information or "glowing" tributes, or replaced the article in part or whole by staff-authored biographies. The staff of at least five politicians were implicated: Marty Meehan, Norm Coleman, Conrad Burns, Joe Biden and Gil Gutknecht. The activities documented were: