Sometimes tool's make sense (ad sense :O)

Before you deside (how/what/why)
test this tool and you will be able to see different
adsense banner live – based on your site theme
http://www.sponsordirectory.com/adsense-google/

And the sandbox:
Test your keyword
http://www.digitalpoint.com/tools/adsense-sandbox/

Finally the must have Ebook
How to get most revenue with adsense
http://kortlink.dk/6wx

Injoy
KAH