Nine in the world are either web search engines (such as Google.com) or internet ‘portals’ (such as Yahoo.com) that provide access to a web search service. Every second of every day, somewhere in the world, around 3,000 people hit the search button on Google, with thousands more using other popular search tools. of the 20 most visited websites
As such a central point of departure for users, search engines represent the beating heart of the web. It seems natural that economists — who are so concerned with the trade of goods and services — should be fascinated by a tool that can be used to help consumers find things to buy; but search engines also conceal a hive of economic activity in their own right, and this lends search engines like Google a double allure for the curious economist.
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