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Less well known is the impact of Web search engines on what information we find and consume. Given that 75 of Web users rely on search engines as the primary means to traverse the Web ( Bruemmer, 2001 ), the significance of search engines in an information society should not be underestimated.
The sheer size of the Web makes it impossible for a single search engine to cover all Web pages in existence. Different search engines cover different parts of the Web. As websites that are covered by search engines are much more visible and accessible to Web users, the selective coverage of the Web by search engines has great social, political, cultural, and economic implications.