Online here:

http://www.newyorker.com/fact/content/articles/060731fa_fact

A quote:

Curiously, though, mob rule has not led to chaos. Wikipedia, which began as an experiment in unfettered democracy, has sprouted policies and procedures. At the same time, the site embodies our newly casual relationship to truth. When confronted with evidence of errors or bias, Wikipedians invoke a favorite excuse: look how often the mainstream media, and the traditional encyclopedia, are wrong! As defenses go, this is the epistemological equivalent of “But Johnny jumped off the bridge first.” Wikipedia, though, is only five years old. One day, it may grow up.

A recent funny jab at Wikipedia by The Onion:

http://www.theonion.com/content/node/50902