Why Quality Score Matters – Short and Sweet Version

I recently read an article where it was reported that "that the average Quality Score is roughly 5.1 out of 10". That is...unbelievable. Which is not to say I don't believe the report which was based on data culled from literally thousands of AdWords accounts. I find it unbelievable that so many AdWords account managers would be allowing so many low quality score keywords to remain active in their accounts. If nothing else it shows there's quite a few out