The 20 most expensive keywords categories with the highest search volume (i.e. the most used keywords) and highest costs per click, thereby netting Google the most money, are:
![cpm for ads by keywords]()
- Insurance (example keywords in this category include "buy car insurance online" and "auto insurance price quotes")
- Loans (example keywords include "consolidate graduate student loans" and "cheapest homeowner loans")
- Mortgage (example keywords include “refinanced second mortgages” and “remortgage with bad credit”)
- Attorney (example keywords include “personal injury attorney” and “due defense attorney”)
- Credit (example keywords include “home equity line of credit” and “bad credit home buyer”)
- Lawyer ("personal injury lawyer,""criminal defense lawyer)
- Donate ("car donation centers,""donating a used car")
- Degree ("criminal justice degrees online,""psychology bachelors degree online")
- Hosting ("hosting ms exchange,""managed web hosting solution")
- Claim ("personal injury claim,""accident claims no win no fee")
- Conference Call ("best conference call service,""conference calls toll free")
- Trading ("cheap online trading,""stock trades online")
- Software ("crm software programs,""help desk software cheap")
- Recovery ("raid server data recovery,""hard drive recovery laptop")
- Transfer ("zero apr balance transfer,""credit card balance transfer zero interest")
- Gas/Electricity ("business electricity price comparison,""switch gas and electricity suppliers")
- Classes ("criminal justice online classes,""online classes business administration")
- Rehab ("alcohol rehab centers,""crack rehab centers")
- Treatment ("mesothelioma treatment options,""drug treatment centers")
- Cord Blood ("cordblood bank,""store umbilical cord blood")Google brought in $32.2 billion in total advertising revenue.