Comment OP highlighter. see http://www.reddit.com/r/ideasfortheadmins/comments/195qi2/how_about_a_visual_indicator_to_show_when_a/

gistfile1.txt

// Bookmarklet:
javascript:(function(){function get_random_color() { var letters = '0123456789ABCDEF'.split(''); var color = '#'; for (var i = 0; i < 6; i++ ) { color += letters[Math.round(Math.random() * 15)]; } return color; }window.authors={};$('a.author').each(function(){var $t=$(this),n=$t.html(),c;if(!(n in window.authors)){c=get_random_color();window.authors[n]=c;$('a.author:contains('+n+')').css('background',c); }});})();


// Full Script:

// This function from http://stackoverflow.com/questions/1484506/random-color-generator-in-javascript
function get_random_color() {
    var letters = '0123456789ABCDEF'.split('');
    var color = '#';
    for (var i = 0; i < 6; i++ ) {
        color += letters[Math.round(Math.random() * 15)];
    }
    return color;
};

window.authors={};
$('a.author').each(function(){
  var $t=$(this),
    	n=$t.html(),
			c;

	if(!(n in window.authors)) {
		c = get_random_color();
		window.authors[n] = c;
		$('a.author:contains('+n+')').css('background',c);
	}
});