Good article from Russell Brown on the various failings of Wikipedia, including the tendency for various NZ wingnuts (and others) to try and convert it into a propaganda board for ACT.
It does occur to me, however, that the GFDL allows anyone to take a snapshot of all or part of Wikipedia and run with it. For instance, one could envisage a system of expert (or at least unbiased) editors who can approve and lock copy. The difficulty is that such systems can eventually logjam and become (more or less) useless (like Open Directory).
One day, technology will allow articles to be checked, referenced and approved by a neutral software program!