The Way Search Engines Work

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By far, the best way to understand search engine optimization is to understand how the search engines work. This is not an article for SEO dummies, so I presume we all know what search engines are.

A search engine like Google which happens to be the God of all SEs has four major operations involved for it to provide its users the credible research results when they look for information on it.

You might be confused on how these search engines can figure out which sites are credible and which ones are not. They do this through a process called crawling. These SEs run an automated program where 'spiders' or 'bots' crawl the pages and documents in the World Wide Web by using the hyperlink structure of the web. It has been revealed that out of 20 billion pages spiders crawl about 8 to 10 billion of it.

Next to the crawling part is the indexing. When all the pages are crawled, some of them valuable ones can be indexed or stored for example in Google's giant database of documents that make up the SEs index. They have a critical role to play hence they should be managed properly so that each time a user performs a task on the SE which requires searching and sorting out of information, it will only take a fraction of a second to display.

Once, the database is filled with all relevant information it has crawled and once a user asks for information on the SE, all matched documents stored in the index will be displayed on the SE. When we say match, it means documents that contain the words or phrases that the user typed in the search engine. It is very sensitive in that it follows a system called Findall mode. In this system, let's say for example you type the words 'houses and cars.' Its search result is 30,300,000, but when the words are enclosed in quotation marks it will give out a search result of 181,000. In the first case, it gives out documents that have the words houses and cars but it won't read the conjunction and while in the second case, the quotation marks set out the exact words houses and cars, which limits the number of documents.

Then just to ensure that the user can get the matched information on his search, the SE has a ranking system. With the use of its algorithms (a mathematical equation used for sorting), the SE runs a calculation to determine which is the most relevant to the given query. They sort it out from the most relevant to the least, and that's what you see in your screen. That way you can choose which one to read first.

Search engine optimization and Internet marketing initiatives will be laid to waste without knowledge on this. So you are a lucky one.

About the Author:
Eric Rockefeller creates informational and "how-to" products for new internet marketers as well as seasoned veterans to improve their business.

To see more and pick up his products to help increase YOUR profits, check out http://www.ericrockefeller.com



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