Just how credible is Wikipedia? While some have tested this empirically, others have chosen more dubious methodology. For a site that gives no credit to its post authors, one wonders, why even bother?
posted by iamkimiam on Sep 3, 2009 - 94 comments

Butterfly or bat? Lobster or spider? Cheating or educating?
posted by william_boot on Jul 28, 2009 - 50 comments

Britannica's issued a salvo against Nature's famous "Wikipedia and the EB are comparably error-strewn" analysis. Here (pdf).
posted by Tlogmer on Mar 23, 2006 - 42 comments

The journal Nature: "Wikipedia comes close to Britannica in terms of the accuracy of its science entries."
Nature had experts review articles from both encyclopedias. (Also, 10% of Nature authors contribute to Wikipedia.)
posted by Tlogmer on Dec 14, 2005 - 31 comments