I want to build one authority site with a broad/general topic, targeting several keywords, monetized with AdSense.
According to a list (SpyFu's list), insurance and loans are the top profitable topics to choose if one wants to make money with AdSense.
Is that really true?
Looking at SpyFu's top topics list, is that a reliable way when choosing the general topic?
What about electronics, home equipments, games, health, sports, foods, etc. etc.?