<p>Search-engine friendly URLs. Refers to URLs that are descriptive in a way that search engines can understand. Normal Joomla! URLs look something like this: <code>http://www.yoursite.org/index.php?option=com_content&view=section&id=3&Itemid=41</code>
</p>

<p>
You can optionally have URLs display to look like static HTML pages like this: <code>http://www.yoursite.org/faq.html</code>
</p>


<p>
Joomla! 1.5 has built-in optionos for SEF URLs. These are enabled by changing the ""SEO Settings"" in the Site tab in the Global Configuration screen in the Joomla! back-end. There are also third-party extensions that create SEF URLs for Joomla!.
</p>

<p><strong>Reference: <a  href="http://docs.joomla.org/Glossary" 
        title="read the reference" 
        alt="read the reference" 
        target="_blank"
        rel="nofollow">http://docs.joomla.org/Glossary</a>
</strong></p>