In 2008, I organized a systematic study of 3 months' worth of edits to the 100 Wikipedia articles about then-current U.S. senators. The results were published, finding that these 100 articles were deliberately vandalized about 6.8% of the time, and that some libelous edits persisted for days and weeks at a time, through thousands of page views without being fixed. Not NPR nor any other news agency has ever sought to interview me or include this study in their reporting about Wikipedia's problematic accuracy, although plenty of pro-Wikipedia zealots have sought to suppress its dissemination.
The results of the study are here:
http://www.wikipediareview.com/Wikipedia_Vandalism_StudyWednesday, January 12, 2011 11:35:07 AM