Google is a colossus of modern advertising. In the first half of 2015, the search engine colossus raked in nearly $35 billion in Q1 and Q2. According to their data tables, that’s about an 11% increase in revenue year over year. Google’s AdWords system is the company’s cash cow, which funnels billions of dollars from advertisers as search engine users click on ads for different keywords.
Google has billions of keywords at their disposal. But not all keywords are created equally, and costs per click can wildly vary from a handful of pennies to hundreds of dollars. So which ones are the most expensive?