One controversy in the English Wikipedia concerns which national variety of the English language is to be preferred, with the most commonly advocated candidates being American English and British English. Perennial suggestions range from standardizing upon a single form of English to forking the English Wikipedia project. A style guideline states, "the English Wikipedia has no general preference for a major national variety of the language" and "an article on a topic that has strong ties to a particular English-speaking nation uses the appropriate variety of English for that nation". An article should use spelling and grammar variants consistently; for example, color and colour are not to be used in the same article, since they represent American and British English, respectively. The guide also states that an article must remain in its original national variant.
There has been a similar issue in the Chinese language Wikipedia concerning regional differences in writing. Efforts at a language fork for Portuguese Wikipedia have failed, and succeeded for Norwegian Wikipedia.
Incidents of cyberbullying on Wikipedia have been reported in the mainstream press. The Glen A. Wilson High School was subject of such a threat in 2008, and a 14-year-old boy was arrested for making a threat against Niles West High School on Wikipedia in 2006.
A 2013 study from Oxford University concluded that the most disputed articles on the English Wikipedia tended to be broader issues, while on other language Wikipedias the most disputed articles tended to be regional issues; this is due to the English language's status as a global lingua franca, which means that many who edit the English Wikipedia do not speak English as a native language. The study stated that the most disputed entries on the English Wikipedia were: George W. Bush, Anarchism, Muhammad, List of WWE personnel, global warming, circumcision, United States, Jesus, race and intelligence, and...