Author Advertising Plugin allows blog admins to create a revenue sharing program utilising one of the many advertising programs out there i.e Yahoo, Google Adsense, Amazon, Allposters etc. It can also be used as a banner manager, author photo/website widgets…

Admin has complete control over: * The percentage of author adverts to admin adverts. * The user level that an author has to be before they get to participate in the revenue sharing program * Whether to randomise author ads on the front page of the blog. * The page that authors see before entering their publisher id. * Custom fields where you can collect additional information from your authors and display it. * The positioning and content of ads. * Up to three Author Advertising widgets. * The information that authors enter.

Pricing: Free
Requirements: WordPress 2.7+
Source: http://wordpress.org/extend/plugins/author-advertising-plugin/