Search engine optimisation is a methodology of strategies, techniques and tactics used to increase the amount of visitors to a website by obtaining a high-ranking placement in the search results page of a search engine (SERP) -- including Google, Bing, Yahoo and other search engines.
SEO helps to ensure that a site is accessible to a search engine and improves the chances that the site will be found by the search engine.
It is common practice for Internet users to not click through pages and pages of search results, so where a site ranks in a search is essential for directing more traffic toward the site. The higher a website naturally ranks in organic results of a search, the greater the chance that that site will be visited by a user.
SEO is typically a set of "white hat" best practices that webmasters and Web content producers follow to help them achieve a better ranking in search engine results. Search Engine Land's Guide To SEO explains the ranking factors in more depth, in a tutorial providing tips and advice on implementing them.
DID YOU KNOW there also Black Hat s.e.o. and it frowned upon
keyword stuffing? - Keyword stuffing is an SEO technique used by some Web designers to overload keywords onto a Web page so that search engines will read the page as being relevant in a Web search. Because search engines scan Web pages for the words that are entered into the search criteria by the user, the more times a keyword appears on the Web page the more relevancy the search engine will assign to the page in the search results (this is only one way that search engines determine relevancy, however.)
Search engines often penalize a site if the engine discovers keyword stuffing, as this practice is considered poor netiquette, and some search engines will even ban the offending Web pages from their search results.
The newer method of SEO is Search Engine Indexing this is done through web crawlers. If a XML sitemap page is on your website the web crawler knows exactly how many pages require to be crawled and in which order they are crawled they recover they collect data, store and total keyword both by page and site, they check to see if links are not broken.
A request can be made for the web crawler to return at set intervals to ensure your web page is matched to your position on the web correctly.
Web sites that are not using accessibility guidelines will see there web sites lower in the rankings, web crawlers are now checking that ALT tags have text in them and that the text is relevant to the image, web crawlers are checking each image to ensure that the LONGDESC tags have the correct information also. Sites that use only images will have no page ranking, also sites that use images only with no ALT tags are breaking the law, the Owners run the risk of court action or having their website removed from the world wide web.
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