Search Engine Optimisation
From Joomla! Documentation
Search Engine Optimisation (often abbreviated to SEO) refers to the process of improving the volume and quality of traffic to a Website from search engines. A site that has been optimised according to SEO practices is said to be Search Engine Friendly (often abbreviated to SEF).
The main article about SEO is Making your site Search Engine Friendly, which lists steps that lead to a better search engine ranking.
A somewhat important SEO technique that also helps your users is using Search Engine Friendly URLs.
For more articles and information: