#1 Is initial QS always 6 or is it essentially the rounded average of all current advertisers for the same keyword, or based on some history of average QS for all advertisers for that keyword?
#2 - What triggers creation of an initial quality score? I have seen that creating a new Campaign with the same keywords as other existing campaigns but with different geographic target starts with a brand new quality score. This would make sense since better geographically targeted ads could produce higher CTR which equals more revenue for Google so they don't want to penalize the keywords in the new campaign right up front just because they are performing in another campaign. Yet I recall though if you simple copied a campaign, then paused the old one, if all settings are the same, QS on keywords doesn't reset, or does it? (Haven't tried it in a while but I assume not, Google isn't that stupid.) Do other campaign setting changes reset QS on identical keywords from previous campaigns like adding new negative keywords to the new campaign?
#3 - Because Google derives revenue by clicks, not impressions, it would make logical sense that the QS is HEAVILY weighted on Click Through Rate (CTR). What's the second most important factor (keyword in add title, or text?) or are all the factors other than CTR so much less significant that it's hard to tell what comes next?