As always, don't install all of these unless you want to decrease your blog's response time.
Ad Integration - While it is more a tool to add advertisements you like to your posts, the clearest choice is Google AdSense. This will allow you to change ads on your site without having to constantly edit your templates.
AdSense Manager - Allows you to manage the codes of many different online advertising networks with a focus on Google's AdSense.
AdSense Revenue Sharing - If you run a multi-author blog, this is the perfect solution for revenue sharing. It will let you easily create multiple authors and allow each of them to have their own AdSense set up so they can earn the revenue from their posts.
All in One Adsense and YPN - Allows you to insert AdSense and Yahoo Publisher Network ads in all of your posts, opt to skip some, randomize where they are inserted to lower ad blindness, and many more options.
Googmonify - Allows you to set it up so you can add AdSense to all of your posts by just using simple tags to insert the ad units as you like.
Ozh' Who Sees Ads - Allows you to set several options for when an add gets displayed. Some of the most interesting ones are if the reader comes from a search engine, was published between certain dates, is older than X number of days and more.
Random / Rotating Ads - By using text files and widgets, you're able to add rotating ads to the same spot on your blog. You can even alternate between Google AdSense, affiliate links and more.
