Google AdSense optimization tips for blogs and adsense placement suggestions that vary based on the type of traffic sources to your blog.
There is an old article about losing revenue from the All in One AdSense and YPN plug-in for Wordpress but you can make sure you won't lose any earnings.
I have been working on ways to increase my Google AdSense earnings for the last three months and finally have some payoff as my earnings have tripled.
The only way to truly know what works best with Google AdSense for your blog is to experiment with AdSense ad unit types and locations and compare months.
I was really neglecting my ability to capitalize on my Google AdSense CPC, which has become much more lucrative for my blogging Yoda over the past few months.