I had a similar issue in a theme. It is a link back to the creator of the theme. I replaced my code in the footer similar to below:
<div id=”footer” role=”contentinfo”>
<p align=”center”>
Copyright ©2010 WEBSITE. All Rights Reserved.
</p>
</div>
</div>
</body>
</html>
If you find that your site has now been hacked with hidden links in the footer (look at the page source of your live page to see), the the best link I found to fix this was:
Worked like a charm for me.