What Are The 20 Most Expensive Keyword Categories In Google AdWords?

Google makes a heck of a lot of money from online advertising. In fact, 97 percent of Google's revenue, which totaled $33.3 billion in the past twelve months, comes from advertising. WordStream, a venture capital-backed provider of hosted software that automates most of the manual work involved with creating and optimizing both paid and natural search engine marketing campaigns, has done some research to discover which keyword categories fetch the highest costs per click (CPC) in Google's AdWords solution.

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