This infographic shows that just over half of the top AdWord keywords fall into insurance and loans categories … but hang on … 24% and 12.8% add up to 36.8%, not 50% or more. I’ve knocked up a quick chart in Numbers showing what I think the pie should look like in reality. Am I missing something? Why would somebody even want to misrepresent that data? So they can overcharge finance companies for SEO work?

Still, the data itself is quite interesting (if you still trust it):

The 20 keyword categories with the highest search volume and highest costs per click, thereby netting Google the most money, are:

1. Insurance (example keywords in this category include “buy car insurance online” and “auto insurance price quotes”)
2. Loans (example keywords include “consolidate graduate student loans” and “cheapest homeowner loans”)
3. Mortgage (example keywords include “refinanced second mortgages” and “remortgage with bad credit”)
4. Attorney (example keywords include “personal injury attorney” and “dui defense attorney”)
5. Credit (example keywords include “home equity line of credit” and “bad credit home buyer”)
6. Lawyer (“personal  injury lawyer,” “criminal defense lawyer)
7. Donate (“car donation centers,” “donating a used car”)
8. Degree (“criminal justice degrees online,” “psychology bachelors degree online”)
9. Hosting (“hosting ms exchange,” “managed web hosting solution”)
10. Claim (“personal injury claim,” “accident claims no win no fee”)
11. Conference Call (“best conference call service,” “conference calls toll free”)
12. Trading (“cheap online trading,” “stock trades online”)
13. Software (“crm software programs,” “help desk software cheap”)
14. Recovery (“raid server data recovery,” “hard drive recovery laptop”)
15. Transfer (“zero apr balance transfer,” “credit card balance transfer zero interest”)
16. Gas/Electricity (“business electricity price comparison,” “switch gas and electricity suppliers”)
17. Classes (“criminal justice online classes,” “online classes business administration”)
18. Rehab (“alcohol rehab centers,” “crack rehab centers”)
19. Treatment (“mesothelioma treatment options,” “drug treatment centers”)
20. Cord Blood (“cordblood bank,” “store umbilical cord blood”)