This is a pretty good resource for someone who just wants to know the basics. In my opinion the best high level resource for quality score information is http:

This is a pretty good resource for someone who just wants to know the basics. In my opinion the best high level resource for quality score information is http://www.clickequations.com/blog/ http://www.clickequations.com/blog/ The guy who writes there also has a book coming out http://www.highresolutionppc.com/books/quality-score-in-high-resolution/ http://www.highresolutionppc.com/books/quality-score-in-high...