We have implemented an author adsense share system on Ninebean.  Our authors now get 70% of the ad visibility throughout the day.

Unlike other sites that use a timed system (the cynical will question which hours are used) we have an easy split system, for every 10 page loads or your articles, blogs and author pages, your adsense code is displayed 7 times, giving you a greater revenue chance.

If you need any further info, just drop a comment into this blog post.