For every webmaster, System Engine Optimization or SEO only means one thing - tailoring web content to attract more search engine-driven traffic to his website. The higher the rank of a website in the search engine results, the more traffic it gets. Improving the rank of a website means it will have more chances of being visited by more readers and people who may become potential clients or sources of revenue. Regardless of what services or products may be offered, it is essential for for the site to be search engine-friendly as statistics show over 95% of traffic are driven by search engines.