"Growing Wikipedia Revises Its 'Anyone Can Edit' Policy" - The New York Times

The big question is not so much the "anyone can edit" policy, or even the "protected" entries contrroverys, but rather whether the apparent success and accuracy of Wikipedia is sustainable. We are still in a period of early development, and the real test will come 5 and 10 years from now to see if a probably far larger database retains the same volunteer commitment to accuracy as we see today. The chances that it will not remain uncomfortably high.