// ==UserScript==
  // @name          Flickr Comment Highlighter
  // @namespace     http://www.dopiaza.org/flickr/greasemonkey/
  // @description   Highlight Flickr Comments
  // @include       http://www.flickr.com/*
  // @include       http://flickr.com/*
  // ==/UserScript==
  
  var buddyIconPattern = /^http:\/\/static.flickr.com\/\d+\/buddyicons\/(.+).jpg/;
  var blockheadPattern = /^http:\/\/www.flickr.com\/images\/buddyicon.jpg\?(.+)$/;\; var\; myNsid\; =\; unsafeWindow.global\_nsid;\; var\; commenters\; =\; document.evaluate(\; "$//td[@class='Who']",
    document,
    null,
    XPathResult.UNORDERED_NODE_SNAPSHOT_TYPE,
    null);
  
  for (var i = 0; i < commenters.snapshotLength; i++) 
  {
    var isMyComment = false;        
  
    var tdCommenter = commenters.snapshotItem(i);
  
    // We are looking for the buddy icon contained within
    var images = tdCommenter.getElementsByTagName('IMG');
  
    for (var j = 0; j < images.length; j++)
    {
      var img = images[j];
      var src = img.getAttribute('src');
      var result = buddyIconPattern.exec(src);
  
      if (result == null)
      {
        // Try the second version, just in case you have no buddy icon set
        result = blockheadPattern.exec(src);
      }
  
      if (result != null)
      {
        // This is the buddy icon
        var nsid = result[1];
        if (nsid == myNsid)
        {
          isMyComment = true;
        }
  
        break;
      }
    }
  
    if (isMyComment)
    {
      // Need to restyle the comment to highlight it.
      // The parent container is the table row, and contains the commenter details
      // and the comment itself
      var container = tdCommenter.parentNode;
      container.style.backgroundColor = '#EEEEEE';
    }    
  }