Google cares more about their users rather than those people spending huge amount of money to advertise their site. Regardless whether you give Google $10k a month for your PPC campaign, they can actually slap you anytime, “Google slap” as they call it. Another thing I learn, I’m not an expert on PPC (Pay per Click) yet, I only use it on my own personal site and I learn that you cannot just pause and play campaigns, just to test, there are other way of doing it. Why, your historical CRT (Click Through Rate) matters a lot. The acceptable CTR at least is 2%; Google actually monitors your activity and inactivity the first day you run a campaign. How do you measure CTR? It’s Click/Impression = CTR. And if you want to know your Ad Rank its CPC (Cost per Click x Quality Score). The CPC is the amount you’re willing to pay and Quality score covers your landing page, relevance of ad test, historical CTR, account performance and other relevant factors. In short, Quality Score encompass both your account performance as a whole and the quality of your website, which is quite a lot to discuss. Well, I can’t discuss it yet, I still have to attend another seminar this June on PPC, a hands-on coaching (I’m really excited on this one).