Create a revenue sharing program with your authors. This WordPress 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 or for random website widgets.
The free version of the plugin updates using the WordPress dashboard. Whenever a new version comes out WordPress will notify you. You can also join the plugin update mailing list below.