Search engine optimization how it works?

Search engine optimization (SEO) is the process of improving the volume or quality of traffic to a web site from search engines via "natural" ("organic" or "algorithmic") search results. Typically, the earlier a site appears in the search results list, the more visitors it will receive from the search engine. SEO may target different kinds of search, including image search, local search, and industry-specific vertical search engines.

As an Internet marketing strategy, SEO considers how search engines work and what people search for. Optimizing a website primarily involves editing its content and HTML coding to both increase its relevance to specific keywords and to remove barriers to the indexing activities of search engines.

If one wants to know any details or service provide first place they will go will be search engines... which are those search engines?????

The leading search engines, Google, Yahoo! and Microsoft, use crawlers to find pages for their algorithmic search results. Pages that are linked from other search engine indexed pages do not need to be submitted because they are found automatically. Some search engines, notably Yahoo!, operate a paid submission service that guarantee crawling for either a set fee or cost per click. Such programs usually guarantee inclusion in the database, but do not guarantee specific ranking within the search results.Yahoo's paid inclusion program has drawn criticism from advertisers and competitors.Two major directories, the Yahoo Directory and the Open Directory Project both require manual submission and human editorial review.Google offers Google Webmaster Tools, for which an XML Site map feed can be created and submitted for free to ensure that all pages are found, especially pages that aren't discoverable by automatically following links.

Search engine crawlers may look at a number of different factors when crawling a site. Not every page is indexed by the search engines. Distance of pages from the root directory of a site may also be a factor in whether or not pages get crawled

How to do SEO?

• Finding keywords is one thing, but managing them is another. Keyword management is very crucial for SEO success. For your site's content, keep track of Back links and PageRank for landing pages and other important site pages. Tools for link building help you from start to finish. Find the links, check their strength and quality, manage them from one place, and watch them over time.
• Post your website link in various directories
• Write an article about your website and make sure it gives very good information on your site
• Link Building work is what it takes for effective link building. But link building can be easier.
• Subscribe to http://www.submitterbot.com/index.php which will allow you to submit your site in different 527 directories at free of cost