Wikipedia "Not a Reliable Source of Information" For Judicial Notice
A New Jersey judge who allowed a lawyer to plug an evidentiary gap with a Wikipedia page has been reversed on the ground that the online encyclopedia that "anyone can edit" is not a reliable source of information.
http://www.law.com/jsp/legaltechnology/pubArticleLT.jsp?id=1202430073269
This may be a good opinion where there is a hotly contested fact. But then, I don't think that judicial notice is appropriate for any hotly contested fact. A study compared Wikipedia with the Encyclopedia Britannica for accuracy, and considered them to be equal.