SEO
Whatever your strategy for getting traffic to your website Google, Yahoo and other search engines can be a source of free traffic if you do the right things and make it easy for the search engine robots to get the right information about your website.
Part of SEO is making sure that you are listed for the right keywords: relevant keywords that people will search for.
Find out more from this book: Professional Search Engine Optimization with PHP: A Developer’s Guide to SEO and browse our SEO Links