Publisher’s google adsense want to get much earnings. The way is put the ads on the right place. So, if you are a publisher and want to manage your adsense easily, use the adsense plugin. Maybe, the plugin below make easy for you to manage your adsense.

* Adsense Deluxe, automatically insert the ads (it works at yahoo ads, too)
* AdSense Widget for Wordpress Sidebar, add adsense in your widget
* Shylock AdSense, it has an interesting feature that lets you set particular ads into blog posts which are more than X days old
* Adsense Injection, random adsense for your blog
* AdMan, ads directly to your blog
* AdSense Manager, a fully featured AdSense manager, it had some issues with the AdSense terms and conditions
* AdRotator, AdRotator rotates (doh!) your AdSense ads, and combines them with other advertising programs
* AdSense Attachment, displaying extra content
* MightyAdsense, display AdSense ads without modifying the templates
* Adsense Inline, easily insert adsense to your blog post

or you can see the full summary at http://mashable.com/2007/09/04/wordpress-adsense/