Andy Stefano's blog
A few weeks ago, Google announced that it was changing the way Quality Scores would be reported. Not how they are calculated, they pointed out, just how the scores are reported. This seems like clear confirmation from Google that the 1-10 Quality Score you see in AdWords is just a “front” for whatever your “real” score is.
If nothing changed about your “real” Quality Score, and this is truly just a glossy reporting change, then there should be no effect on your other metrics. BUT, there’s another way to interpret Google’s announcement. Google might be saying that they haven’t changed the factors that go into Quality Score, but they have changed how they normalize the results (which is how they can compare disparate advertisers). If that’s true, then there could be substa... > Read more