ESTO PEGAR ANTES DEL < BODY >
<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.3.2/jquery.min.js"></script>
<script type="text/javascript" src="http://apps.selibre.net/widgets/muugs.js"></script>
<link href="http://apps.selibre.net/widgets/muugs.css" rel="stylesheet" type="text/css" />

<script type="text/javascript">
$(document).ready(function() {
$('#muugs').muugts({
image_size : 40,
count : 3,
username: "",
convert_links : 1,
loader_text : "cargando ..."
});
});
</script>
ESTO PEGAR DONDE APARECERA EL WIDGET
<div id="caja-selibre">
<img src="http://apps.selibre.net/widgets/header.png" width="290" height="42" />
<div id="muugs"></div>
<div id="muugs_footer"></div>
</div>