tailieunhanh - WEB DESIGN AND MARKETING SOLUTIONS FOR BUSINESS WEBSITES phần 9

và thuộc tính phương tiện truyền thông đưa ra phong cách trang nên được áp dụng. Trong ví dụ này, file CSS là để dành cho màn hình (cửa sổ trình duyệt truyền thống về cơ bản) và môi trường chiếu (thời hạn cho trình duyệt hoạt động trong kiosk mode8). | SEARCH ENGINE OPTIMIZATION Always give descriptive supporting text to outbound links. This is handled through the anchor text the words between the a tags and the value of the title attribute. This content boosts the ranking opportunities of the site benefiting from the link which in turn will help the originating source. For example a href http title Electronic Radiology Laboratory investigates digital imaging technologies for radiology departments Electronic Radiology Laboratory a External strategies Once a website s markup and structure have been cleaned and polished for optimization it s time to pursue the external strategies that will give the domain the support it needs to help reach the first page of search engine results. Implementing external strategies can take just as long if not longer as internal strategies and will likely be the focus of the SEO campaign for a long time simply because of the iterative cycle of fine-tuning and measuring. Grabbing a high ranking does not happen overnight. In fact for especially competitive arenas patience is not a virtue it s a requirement. Building incoming links Above all else there is one primary tactic for building search engine karma incoming links. Google was revolutionary in the respect that its PageRank system largely based its results on the popularity of the site which essentially boiled down to how many links were pointing to the domain. Since then every search engine has copied this model. Today the secret ingredient to Google s ranking system is mired in millions of lines of highly secure algorithmic code stored on black boxes in rooms where only the most privileged employees have access. There is not much the world knows about this secret sauce. But the one thing experts pundits and casual passersby do know is that a website s ranking is based on more than just the quantity of incoming links there is a subset of tests that determine each external link s value 1. The anchor text This is the .