Google's pay per click engine... what makes it tick? Do you think it rocks? or sucks? Can you trust Google to send consistant quality traffic? How to get the most bang for your buck or most clicks for your dollar.
Adwords is in a constant state of evolution. It evolves over time and I believe their intentions are good, that is to say they strive to make the system better. However it is the subject of much debate as to who it is better for? The parties involved include the 1. the user 2. the advertiser and 3. Google. All statements by Google imply that the user is Google's primary focus. Which if true is reasonable. However no company including Google can ever totally ignore their bottom line or their clients.