Some other ways to increase your Adsense earnings.

1.Choose one topic per page. It is best to write content for your
page with just a few targeted phrases. The search engine will then
serve ads that are more relevant.
2.Using white space around your ad. This can make your ad stand
out from the rest of your page so visitors can spot them easily.
There are also other choices of colors you can use, provided by
search engines, which can harmonize the color of your ad with the
web page color.
3.Test your ad placement. It is recommended to use the vertical
format that runs down the side of the web page to get more
positive results. You can also try both horizontal and vertical
formats for a certain period of time to see which one will give you
better results.
4.More content-based pages. Widen the theme of your website by
creating pages that focus more on your keyword phrases. This will
optimize the pages for the search engines. It can not only attract
traffic but also make them more relevant for the AdWords to be
displayed.
5. S ite Build It. This is the perfect tool to be used for creating lots of
Adsense revenues. Site Build It has all the tools necessary to
quickly achieve a keyword-rich site that can rank high in the search
engines. This will also produce a flow of traffic to your site of highly
targeted visitors.
Most webmasters know that Adsense generates a sizeable source of
additional advertising income. That is why most of them use it to go
after high paying keywords.