FYI: http://firstmonday.org/issues/issue11_11/chesney/

...This short study examines Wikipedia's credibility by asking 258 research staff with a response rate of 21 percent, to read an article and assess its credibility, the credibility of its author and the credibility of Wikipedia as a whole. Staff were either given an article in their own expert domain or a random article. No difference was found between the two group in terms of their perceived credibility of Wikipedia or of the articles' authors, but a difference was found in the credibility of the articles — the experts found Wikipedia's articles to be more credible than the non–experts....

Aus diesem Text lassen sich mehrere Spins generieren. Der angenehmste wäre ein "Es ist gut, wikipedia zu untersuchen, mitzuarbeiten und die Texte kritisch zu betrachten." Natürlich geht auch ein "Wikipedia ist unter Experten glaubwürdig!!!!111" oder ein "Wikipedia enthält Millionen Fehler!!!!!1111".