My friend Dax created this cool AdSense Injection script which will automatically insert AdSense into your WordPress blog entry in a different position each page view, reducing the chance of banner blindness on your blog. It randomly inserts your AdSense code in place of a paragraph break. You can supply your own customized color palette as well.
It currently only works for AdSense, but YPN support is on the to do list, as is channel support to determine which ad placement and style is your blog’s “Sweet Spot”.
Dax is taking feature requests for future versions as well, if you think something would be cool to see in the next release.