Anyone who signs up for an account on Wikipedia.
The articles on Wikipedia are written by users of the site.
Most of the Wikipedia articles can be edited by anyone
How I wrote a million Wikipedia articles, is a book by Maher Asaad Baker, that the author tells how he collected and managed the data, the way he prepared the articles, and the way he automated the process to finally achieved adding 1 million Wikipedia articles to Egyptian Wikipedia.
There are at least 19,700,000 articles in all languages in Wikipedia. 3,700,000 are in English.
There are 3,202,091 on Wikipedia as of 2-22-10.
as of January 2012, there are 128,976 Hebrew articles.
Search Wikipedia - there are loads of articles !
There are a total of 285 languages that offer official Wikipedia articles that come under the auspices of the Wikimedia Foundation. The vast majority of these articles are in English however at over 4 million articles.
Wikipedia has no connection with Microsoft except some articles about them.
The job of Wikipedia is not to copy the content of a book verbatim, but instead provide a general overview of the book.
As of July, 2012, there are more than 4 million articles in the English Wikipedia.
There are tons of articles about Bipolar on the internet. Check EHow, HubPages, Wikipedia, and MentalHealthAmerica.org.