Saturday, November 19, 2011

GOOGLE - Search Engine History


GOOGLE - Search Engine History


In the early days of Internet growth, its users were an advantaged minority and the total of available information was fairly small. Access was mainly restricted to employees of various universities and laboratories who used it to access scientific information. In those days, the problem of finding information on the Internet was not nearly as critical as it is now.

Site directories were one of the earliest methods used to facilitate contact to information property on the network. Links to these resources were grouped by topic. Yahoo was the first project of this kind opened in April 1994. As the number of sites in the Yahoo directory inexorably increased, the developers of Yahoo made the directory searchable. Of course, it was not a search engine in its true shape because searching was limited to those resources who’s listings were put into the directory. It did not actively seek out resources and the concept of seo was yet to arrive.



Such link directories have been used expansively in the past, but nowadays they have lost much of their popularity. The reason is simple – even modern directories with lots of resources only provide information on a tiny fraction of the Internet. For example, the largest directory on the network is currently DMOZ (Open Directory Project). It contains information on about five million resources. Compare this with the Google search engine database containing more than eight billion documents.

The WebCrawler project started in 1994 and was the first full-featured search engine. The Lycos and AltaVista search engines appeared in 1995 and for many years Alta Vista was the chief player in this meadow.

In 1997 Sergey Brin and Larry Page created Google as a research project at Stanford University. Google is now the most popular search engine in the world.

Currently, there are only one leading international search engines – Google Search. it have its own database and search algorithm. Many other search engines use results originating from this one major search engine and the same seo expertise can be applied to all of them. For example, the AOL search engine (search.aol.com) uses the Google database.

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