Stacy Schiff has written a great piece on Wikipedia for The New Yorker. Subtitled, “Can Wikipedia conquer expertise?,” it includes this:
Because there are no physical limits on its size, Wikipedia can aspire to be all-inclusive. It is also perfectly configured to be current: there are detailed entries for each of the twelve finalists on this season’s “American Idol,” and the article on the “2006 Israel-Lebanon Conflict” has been edited more than four thousand times since it was created, on July 12th, six hours after Hezbollah militants ignited the hostilities by kidnapping two Israeli soldiers. Wikipedia, which was launched in 2001, is now the seventeenth-most-popular site on the Internet, generating more traffic daily than MSNBC.com and the online versions of the Times and the Wall Street Journal combined. The number of visitors has been doubling every four months; the site receives as many as fourteen thousand hits per second.
As Schiff notes, Wikipedia now has more than one-million articles.