<p>If it offers <em>any</em> value to the community it should be left up. If it is ill-posed for some reason, it would benefit the community to edit the question (and answer it yourself if possible). I would think in some situations it is ok to leave it ill-posed and then answer it yourself, saying in the answer what was wrong with the original question.</p>

<p>I would take upvotes, favorites, views and comments as evidence that it is a noteworthy subject that is of interest to multiple parties. If it is misleading for some reason, the community should take action (in the form of comments or answers) to prevent misguided questions or answers for future viewers of the topic. </p>
