i changed the topics of my blog from purely games, entertainment and technology, i opened it to a wide variety of topics including business and health topics. So far with the changes i applied, the highest single click is about $5 but it's very rare...the average is about $.25 per click. But i will target to increase my unique visitors and pageviews to as much as 10,000 so as to earn at least $10 - $15 per day in a single blog.
dude .22 per click is very good rate. you just have to optimize your ads and increase your traffic. when you will get good amount of traffics, you will get huge clicks and your income will be doubled. thanks