PUBLIC MARKS from HandySolo with tag ads

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.

Section targeting allows you to suggest sections of your text and HTML content that you'd like us to emphasize or downplay when matching ads to your site's content. By providing us with your suggestions, you can assist us in improving your ad targeting. We recommend that only those familiar with HTML attempt to implement section targeting

Adsense Injection plugin just takes a random paragraph break in your article and inserts adsense code. It does one per story. It lets you pick how many total ads to do (0-3) and it lets you pick the formats and colors you want it to randomly select from.

interesting ideas on how to merge in ad code with Wordpress.