Professor wrote:
IMO spending money on anyone other then Google or Overture is a Total waste of money.
Whereas spending money on Google or Overture is only a 38% waste of money 
Albeit the plaintiff sounds suspect, they are right in that Google and Overture benefit from click-fraud.
IMHO, the whole “partner program” (adsense) is badly flawed in this respect and shouldn’t really be allowed in the real world until such a flaw is overcome. I recently pulled all my PPC campaigns, for this reason and also to avoid scraper sites. Another major “flaw” that is eating away at Google’s heart.
I find it both amusing and frustrating that Google risk their SERPS, the foundation of their business, by unleashing Adsense. Adsense encourages SPAM, encourages Click Fraud. Google aren’t fighting anyone but themselves!