ANDROID ADVERTISNG

I've always been curious about making money online. People have told me there is a lot of competition. I heard it is easier to do it directly to people's cell phones. I know Androids, Iphones, Blackberry, and other Smartphones are now all internet capable. All of those cell phone users can respond immediately! And people have their phones with them all the time. I found a website that kind of makes sound easy. I want to know what others think about it Android Advertising.