See:
http://www.reference.com/encyclopedia/
This is a new website, which does not apparently yet actually have a
reference look up (if you search from
reference.com, you'll receive
dictionary.com results), but you'll notice that Wikipedia is listed among
the sources.
It seems likely that
Reference.com will be using Wikipedia results at some
point soon, just as
Dictionary.com uses free dictionaries. This will
have a probably small, but nonetheless important long-term impact on
public perception of Wikipedia. It'll be the first time a major website
actually uses Wikipedia articles.
Larry
--
"We have now sunk to a depth at which the re-statement of the obvious is
the first duty of intelligent men." --George Orwell