title: Is it good to put a &nbsp; inside an empty <td>?
body: <p>If this is the structure:</p>
  
  <pre><code>&lt;table cellspacing="0" cellpadding="0"&gt;
     &lt;tr&gt;
        &lt;td&gt;I don't need anything here, should I always put a &amp;nbsp; here?&lt;/td&gt;
        &lt;td&gt;item &lt;/td&gt;
     &lt;/tr&gt;
     &lt;tr&gt;
        &lt;td&gt;model&lt;/td&gt;
        &lt;td&gt;one&lt;/td&gt;
     &lt;/tr&gt;
     &lt;tr&gt;
        &lt;td&gt;model&lt;/td&gt;
        &lt;td&gt;two&lt;/td&gt;
     &lt;/tr&gt;
     &lt;tr&gt;
        &lt;td&gt;model&lt;/td&gt;
        &lt;td&gt;three&lt;/td&gt;
     &lt;/tr&gt;
  &lt;/table&gt;
  </code></pre>
  
  <p>How will a screen reader read a blank <code>td</code>? Is it semantically correct?</p>