&gt; You glean just as much information from someone clicking Like and leaving no context as you do someone clicking Dislike and leaving no context.<p>I disagree; Perhaps a programming analogy instead?<p>if(x == 0)  # when this is true, you know what x is, and what it isn&#x27;t<p>if(x != 0)  # when this is true, you only know what x isn&#x27;t<p>Like with no context tells the receiver what the audience wants (more of the same); dislike doesn&#x27;t (okay, so don&#x27;t do this thing, but do what instead?).<p>That&#x27;s what I mean by the analogy - &quot;do this&quot; is a much more <i>useful</i> statement than &quot;don&#x27;t do that&quot;.