Google Related Content in testing

Last month I blogged about a new entry into Google's robots.txt file called "relcontent".  Thanks to Daniel Neamu, we now know that Google is testing a new service that will allow users to put a small javascript block on their page that will produce results like the following:

Since this doesn't appear to show any advertisements, it is likely publishers won't gain anything by using it -- other than the satisfaction of knowing users are finding more information they are looking for.  To solidify that point, the source code for the block doesn't contain any unique identifier -- required to link a website to a user account.

<script type="text/javascript" language="JavaScript">
<!--
    google_rc = new Object();
    google_rc['width'] = 468;
    google_rc['height'] = 60;
    google_rc['modules'] = ['news','searches','pages'];
    google_rc['color_line'] = '336699';
    google_rc['color_link'] = '0000ee';
    google_rc['color_bg'] = 'ffffff';
    google_rc['color_text'] = '000000';
    google_rc['color_source'] = '6f6f6f';
    google_rc['color_header'] = 'c6ddf4';
    google_rc['color_footer'] = 'eeeeee';
//-->
</script>
<script type="text/javascript" language="JavaScript" src ="http://www.googlesyndication.com/relcontent/show_rc.js"> </script>