Download the AdSense revenue sharing plugin from http://wpmudev.org/project/adsense-revenue-sharing/installation and install it.
Go to Site Admin | AdSense share, add your AdSense publisher code, and set the percentage of ad views you wish to share. SlayerCafe has chosen to share 50 percent of the generated impressions.
Your users can add their own publisher ID via the Settings | AdSense Publisher menu.
We now have a simple revenue sharing system in place. If one of our users wants to join the revenue sharing, they can add their personal Google AdSense code in the admin panel. When a visitor comes to that user's blog, there is a 50 percent chance that they will see an advertisement that uses SlayerCafe's Google AdSense code and a 50 percent chance that they will see an advertisement tied to the AdSense account of the user who created the blog.
A revenue sharing system like this should encourage your users to post regular updates on their...