Hi there, If you don't have a clue how this exactly works, then check this out: http://www.youtube.com/watch?v=K7l0a2PVhPQ
Ok now I'm confused. This video tells that Relevance has nothing to do with the CTR: they are just two different components of the quality score. The relevance is determined by the ad relevance + landing page relevance. So why do I have keywords with low QS because of the poor relevance, while the landing page and ad ARE relevant (Google says 'no problems'). If the relvance is "ad + landing page' then how can it be poor when both the components are relevant? There are no CTR stats yet for the keywords. Am I missing something?