I have had a landing page that worked very well for me and ran for a month. Then the QS went to 1 and then the ads are no longer shown. Yet I still see people appearing in the top spots for these my keywords using almost identical landing page to mine. Why is it that their ads show and mines doesn't. Is there some sort of trick to boost your QS? Do they initially run a keyword packed informational lander and then redirect to their fake editorial lander after a few days?