This plugin is streamlined for some best practices for Wordpress SEO. While it gives you many options the defaults reflect the settings I recommend using.
As the second biggest browser out there, and the biggest open source one, Firefox has a tool for just about anything you can dream up. In this list, Mashable has collected over 300 of the best.
Include AdSense and YPN ads automatically. AdSense-Deluxe offers advanced options for managing the automatic insertion of Google AdSense or Yahoo Publisher Network (YPN) ads to your WordPress posts. (TheBlogJoint.com)
AdSense-Deluxe is an easy-to-use plugin for WordPress 1.5+ (including WP 2.0) for quickly inserting Google or Yahoo! ads into your blog posts, and managing when and where those ads are displayed.