do you use google adsense to earn money?

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I've seen so many people online using google adsense to earn money.of course,google is a big ad company in the world,there are billions of money of ad puring in to the google's pocket every day.that is a good choice to earn from google,but how?many people have their own trick .and the bigest winner is the owner of a big website because many people see their page everyday. I also want to have a try and i am preparing for it .i've got my own space (free) and learning how to make a big liuliang. what about you?do you have something to share?how much have you got from the google adsense?