Anyone looking for specific information on the Internet, is to use one of the many search engines. This catalog has been published on the pages and their contents, thus making possible a direct search. However, the number of pages in the Internet has become so great that none of the search engine is able to capture all sides.
Web crawlers are different, but constantly in the process of updating the page directory. The most popular search engines are Google and Yahoo. Microsoft recently launched a rival search engine with Bing to Google. In China, Baidu is the most popular. In order to obtain better positions within the search engine or different forms of search engine optimization (abbreviated SEO) is used. Search engine optimization is acting as part of SEM, which includes as a further measure search advertising. » Read more..
