I'm making money with AdSense, but everything is a guessing game and I feel that I am wasting time on topics and subjects that are no relevant. My guess is the following... 1. Celebrities 2. Cars For Sale & Automotive Parts & Automotive Repairs 3. Making Money Online & Work at Home Jobs 4. Real Estate and Investing 5. Health & Wellness - Fat Loss and Exercise & Fitness How am I doing? Am I anywhere in the ballpark? Please let me hear from you!
Money and Health are known to pay well per click but you're also facing high competition with other webmasters.. I don't know what is your goal, is it really to have the highest CPC or the highest traffic? Me I prefer the highest traffic, so after I can work on optimizing ad placement to get the highest CTR I can, then with traffic it pays..
I think Finance, Stocks and Insurance keywords can give you more income and revenue as compare to other keywords because it has more potential to divert expensive ads on your website if your website has any one of them keywords.