Adsense was to be rewarding... My investment blog is pretty freaking cool. When I first put adsense on it, my traffic was very minimal, then I started writing & more people came to see what I was writing about. Then I decided to put more visual content on my page. My adsense for 3 days straight I made a penny. I was like hmm, ok... Then last week I started showing different stocks that I was interested in & my adsense jumped to clicks equaling into like $2.00. My buddy had been telling me investment adsense sucked. We argued and then came the big week which was last week, my adsense clicks were crazy good. I was super suprised to wake up to 12.00 in my adsense and ever since then it's been steadily growing. I personally think having one section where adsense is present instead of them all over the place. Also make sure it blends in because I tested it many times that the awkward colors were just crazy or having something abnormally out there doesn't make it irresistible, imho. I also talked to someone about diversifying what you utilize & don't utilize.. Also don't give up just my 2c my adsense to date is $18.30
they can come several times, you just have to constantly maintain your site and tweak it to be more beneficial