Google AdSense is the Google program where you can host pay-per-click ads on your Web site. When someone clicks an ad, you earn money. Simple as that.
Is it really as easy to make money with Google AdSense as many would lead you to believe? Now that I've become heavily involved with managing Google AdSense programs for my clients, I can see it's not all play and no work.
Unfortunately, a lot of people bought into the idea that there was a lot of easy money to be made and they are now finding out they aren't making nearly as much as they thought they would. Additionally, Google has a lot of prohibited practices when it comes to AdSense, and too many Webmasters are finding out they violated Google's policies after the fact - often because they never bothered to read the AdSense policies in the first place