e.g. editing http://moodle.org/mod/data/view.php?d=13&rid=2338 results in the following in the long description:

<p>This block is used to allow teachers to provide their students with links to resources indexed by <a class="_blanktarget" href="http://moodle.org/<a href=">http://www.digitalnz.org</a>">Digital NZ.</p>
<h2>Requirements</h2>
<p> </p>
<ul>
<li>PHP 5.2 or later</li>
<li><a href="http://moodle.org/<a href=">External" class="_blanktarget">http://moodle.org/mod/data/view.php?d=13&amp;rid=2337">External</a> Search Moodle block</li>
<li><a href="http://moodle.org/<a href=">Digital" class="_blanktarget">http://www.digitalnz.org/dashboard/api_key">Digital</a> NZ API key</li>
</ul>

(Note: The above links have since been cleaned up, but other database activity entries show the same problem.)