You have to own a blog to extract the maximum potential from Google Adsense. Using adsense by matching the theme of your blog with adsense will help to increase your earning potential. With hubpages integrated adsense program, you can't expect much from Google adsense. Once you have suitable adsizes and find potential space in your blog for placing adsense, you can leverage expected money. So first thing, you should have own your blog/website.