I ran across this parody of Wikipedia from somethingawful.com today. It pretty much encapsulates many of the problems faced by "the wikipedia problem" with SA's typical humorous bent.

A few examples include the lack of an entry for the term "girlfriend," "citation needed" for common knowledge (i.e. Cat babies are also known as kittens), edit wars, personal attacks, blatant inaccuracies and irrelevant commentary. Of course, the sources are none other than the SA forum goons.