I have recently started working with adsense and I have found that the key to adsense is content. You have to have some good content.
I don't make much with adsense but I am just starting to figure it out. Right now I make about 150.00 every two months. So I figure that is pretty good. But I am watching it climb every day.
Blogging to make money? Be sure that your topic interests you.. Don't forget the keywords. Then try submitting your URL to other directories, do some blog commenting to other blogs, do some forum postings and book markings..