Maybe the better metric is usefulness to the reader.  A suitable algorithm can recognize things like &quot;N.N. smells&quot;, but so can any user.  The current algorithms are very effective at dealing with &quot;XY is gay&quot; and &quot;Buy herbal viagra&quot;; you don&#x27;t see much of that.<p>The really insidious stuff is spin doctors for companies and nations.  So far, Wikipedia does a very poor job with geopolitical conflicts, and competing financial interests are not taken seriously enough either.