Is Wikipedia an 'expert' site?

Know it all: Can Wikipedia Conquor Expertise?'

http://tinyurl.com/gckod

Excerpt:
On March 1st, Wikipedia, the online interactive encyclopedia, hit the million-articles mark, with an entry on Jordanhill, a railway station in suburban Glasgow. Its author, Ewan MacDonald, posted a single sentence about the station at 11 P.M., local time; over the next twenty-four hours, the entry was edited more than four hundred times, by dozens of people. (Jordanhill happens to be the “1029th busiest station in the United Kingdom”; it “no longer has a staffed ticket counter.”) The Encyclopædia Britannica, which for more than two centuries has been considered the gold standard for reference works, has only a hundred and twenty thousand entries in its most comprehensive edition. Apparently, no traditional encyclopedia has ever suspected that someone might wonder about Sudoku or about prostitution in China. Or, for that matter, about Capgras delusion (the unnerving sensation that an impostor is sitting in for a close relative), the Boston molasses disaster, the Rhin!
oceros Party of Canada, Bill Gates’s house, the forty-five-minute Anglo-Zanzibar War, or Islam in Iceland. Wikipedia includes fine entries on Kafka and the War of the Spanish Succession, and also a complete guide to the ships of the U.S. Navy, a definition of Philadelphia cheesesteak, a masterly page on Scrabble, a list of historical cats (celebrity cats, a cat millionaire, the first feline to circumnavigate Australia), a survey of invented expletives in fiction (“bippie,” “cakesniffer,” “furgle”), instructions for curing hiccups, and an article that describes, with schematic diagrams, how to build a stove from a discarded soda can. The how-to entries represent territory that the encyclopedia has not claimed since the eighteenth century. You could cure a toothache or make snowshoes using the original Britannica, of 1768-71. (You could also imbibe a lot of prejudice and superstition. The entry on Woman was just six words: “The female of man. See HOMO.”) If !
you look up “coffee preparation” on Wikipedia, you will find your
w
ay, via the entry on Espresso, to a piece on types of espresso machines, which you will want to consult before buying. There is also a page on the site dedicated to “Errors in the Encyclopædia Britannica that have been corrected in Wikipedia” (Stalin’s birth date, the true inventor of the safety razor).