Same way they do now. They don't publicize the algorithms i believe http://www.google.com/ads/adtrafficquality/invalid-click-protection.html http://www.google.

Same way they do now. They don't publicize the algorithms i believe http://www.google.com/ads/adtrafficquality/invalid-click-protection.html http://www.google.com/ads/adtrafficquality/invalid-click-pro...