AdWords Quality Score - Determined at the Keyword Level or Not?
AdWords users should be familiar with the quality score. According to Google the quality score is:
"the basis for measuring the quality of your keyword and determining your minimum bid. Quality Score is determined by your keyword's clickthrough rate (CTR) on Google, relevance of your ad text, historical keyword performance on Google, the quality of your ad's landing page, and other relevancy factors."
Since the quality score is used to help determine the minimum bid required to activate your keyword(s) it's arguably the most important element of an AdWords campaign. Despite it's importance quality score are never published - you can't login to your account and see what quality score has been assigned to your keyword(s). I think most advertisers would love to see exactly what there quality score is (I know I would) but have accepted the fact that Google will not make this information public.
I have been told on numerous occasions by my account rep at Google that the quality score is assigned at the keyword level and is independent of other keywords in that ad group or campaign. In other words, one poor quality score will not impact other keywords in your account that may have a better quality score. Seems reasonable/logical. While putting this post together I actually called to check again was told the same thing I've been told for nearly a year.
A few days ago I came across a post by Robert Cringely that among other things touched on the issue of the AdWords quality score. An overall informative article but what really caught my attention is the line bolded below:
"We have two concepts here -- a Quality Score for words and a History for campaigns. A low Quality Score can lead to an increase in minimum word price and a poor history (lots of low Quality Scores along with low clicks-through) can lead to minimum prices being raised not just for one word, but for all words. In the case of Luis, all this took place in three days and half a dozen words, which I'd hardly call much history, yet there is very little for him to do about it short of canceling his Google account and starting all over."
I've never seen any conclusive evidence that "one bad apple can spoil the bunch" and have been told on numerous occasions by Google that it doesn't work that way. If it did/does work that way - shit - I need to get busy reworking a few thousand campaigns which will turn into tens of thousands of campaigns after I split every keyword into it's own ad group.
The bottom line - advertisers have a right to know if poor performing keywords can or do have a financial impact on other keywords in their account(s).

