[jdsin]

That is true. They drive up prices on Google Ad prices. But I feel its a symptom more than the problem. Because these ad networks have a per-click payout system, they have to track each and every click. One way to fix this would be to have a constant pay rate regardless of clicks. Something like $X/week or $Y/month, where X&Y can be decided on heuristics I explained in other comment.