The paper that helps Britain's enemiesThe Guardian, reports that Wikipedia editors have voted to class The Daily Mail as "generally unreliable" and ban it as a source in all but exceptional circumstances.  The report quotes a statement from the Wikimedia Foundation -- which runs Wikipedia but doesn't control it's editing policies --saying volunteer editors had come to the consensus that The Daily Mail was to be generally prohibited for use as a reference, especially when "other, more reliable sources exist".

The statement continues “This means that The Daily Mail will generally not be referenced as a ‘reliable source’ on English Wikipedia ... This is consistent with how Wikipedia editors evaluate and use media outlets in general -- with common sense and caution.”