Free online encyclopaedia Wikipedia is celebrating a new milestone – an article on Norwegian actress Beate Eriksen added on Monday took the English-language version of Wikipedia over the three million article mark. The encyclopaedia, which first went online in January 2001, now contains a total of more than 13 million articles in more than 200 languages. The English-language Wikipedia, as the oldest version, remains the leading version. The German version is second with more than 940,000 articles, and the French version is third with 840,000 articles.