Joomla! Article SEO Best Practices
The first rule of SEO is to write valuable and relevant content, and generally more articles is better than fewer articles when it comes to overall site ranking in search results. There are some things that can be done in Joomla! in order to make the articles more search engine friendly.
Remember that each article should provide a specific detail that contributes to the overall message of the site. Each article or piece of contents is an individual opportunity to get a listing in a search result. Try to make an article compliment the site's overall message, but not have it compete with other articles or the site's home page for specific keywords. Your SEO goal is to be found, the site's SEO goal is to rank high on a general search, a SEO friendly Joomla! article contributes to this goal by ranking well for a specific detail.