title: page view count increments by 2 every time wordpress page is visited in Chrome
body: <p>I have a simple function that should add 1 to the page views in the wp_postmeta table every time a user visits the page.  The problem is that in chrome, the number increments by two each time the page is visited.  I had initially done this on a taxonomy page and the number was actually incrementing by four on each visit.  The code I used is below and comes from <a href="http://wpsnipp.com/index.php/functions-php/track-post-views-without-a-plugin-using-post-meta/" rel="nofollow">http://wpsnipp.com/index.php/functions-php/track-post-views-without-a-plugin-using-post-meta/</a></p>
  
  <pre><code>function getPostViews($postID){
      $count_key = 'post_views_count';
      $count = get_post_meta($postID, $count_key, true);
      if($count==''){
          delete_post_meta($postID, $count_key);
          add_post_meta($postID, $count_key, '0');
          return "0 View";
      }
      return $count.' Views';
  }
  function setPostViews($postID) {
      $count_key = 'post_views_count';
      $count = get_post_meta($postID, $count_key, true);
      if($count==''){
          $count = 0;
          delete_post_meta($postID, $count_key);
          add_post_meta($postID, $count_key, '0');
      }else{
          $count++;
          update_post_meta($postID, $count_key, $count);
      }
  }
  // Remove issues with prefetching adding extra views
  remove_action( 'wp_head', 'adjacent_posts_rel_link_wp_head', 10, 0);
  </code></pre>