<p>Edit 2: After reading, all the other three answers (+3) and which were better than mine, I have partly changed my mind.</p>

<p>In such extreme situation (after you have tried a couple of times to advise or make a point) ignore the pattern / behaviour (in case one does not want to consider each post as an individual situation).</p>

<p>With time, community will give guidelines about how to act in such situations.  </p>

<p>IMO, the great majority of questions are legitimate (some / many of them are very good ones). </p>

<p>What bothers me, and maybe other users are:</p>

<ul>
<li><p>misleading feedback;  </p></li>
<li><p>editing the question and modifying its meaning after someone provides a good answer,  </p></li>
</ul>

<p><strong>However</strong>, from an objective point of view, what rules does this kind of conduct disobey in CV? I am not sure, but I think none.  </p>

<p>(I read on a SO's meta thread once, someone advising if a question is edited after an answer is posted, the answerer can leave a note / edition, saying the question was edited and the answer does not fully address the question anymore).</p>

<p>Answer to the question:  </p>

<p>Yes, but focusing on the thread and applying same criteria for other users.  </p>

<p>Lastly, I would like to reinforce @whuber's comment, as questions very related or duplicates are not, let's say, a good thing for the site, and community can help a lot to identify them.</p>
