<p><a href="http://meta.stackexchange.com/questions/119715/what-happened-to-flag-weight">It's gone forever, replaced instead with just a count of your helpful flags</a></p>

<blockquote>
  <p>We now only show the number of helpful flags on your profile page (visible only to you) ... this number only ever increases.</p>
  
  <p>Flag weight on the other hand, is gone ... it is dead.</p>
</blockquote>