sh404SEF is a Joomla! extension which creates Search Engine Friendly URLs. It also...

There are basically three ways of approaching search engine friendly (SEF) URLs in Joomla. Here, I explain these three methods of Joomla SEO and their pros and cons.

Search engine friendly URLs are very important if you want to achieve good positions in Google and other search engines. Firstly, the URLs are a lot easier to understand for the user (more likely to be clicked). Secondly, and most importantly, they will (if well-built) contain keywords that the search engine may use in the indexation of the page and thus improve your rankings for those words.