title: HTML attribute "in_rurl"
body: <p>I stumble about a strange attribute ("in_rurl") within a  tag. I found no documentation about this attribute and almost nothing on google. Can anyone tell me more about the attribute and how it works?</p>
  
  <p>Here is an example:</p>
  
  <pre><code>&lt;a style="SOME STYLE INFO" title="Click to Continue  by SalePlus" in_rurl="AN EVIL URL" id="_GPLITA_5" href="#"&gt;
  </code></pre>
  
  <p>I can imagine what the attribute is supposed to do but a documentation or anything like that would still be great. </p>