Top 20 Google AdWords Keyword Categories

Insightful article by MarketingProfs, listing the most expensive and top Adwords categories:

The top five high-volume keyword categories that demand the highest costs per click are as follows:

1. Insurance. Top CPC: $55 (example keywords/keyphrases are "auto insurance price quotes" and "buy car insurance online)
2. Loans. Top CPC: $44 (examples: "consolidate graduate student loans" and "cheapest homeowner loans").
3. Mortgage. Top CPC: $47 (examples: "refinanced second mortgages" and "remortgage with bad credit")
4. Attorney. Top CPC: $47 (examples: "personal injury attorney" and "dui defense attorney")
5. Credit. Top CPC: $36 (examples: "home equity line of credit" and "bad credit home buyer")

And what it means? Read the original article to see: http://www.marketingprofs.com/chirp/2011/5489/where-does-google-make-its-money-top-20-google-adwords-keyword-categories#ixzz1SlGMuVN4