Hi, Can anyone explain me this situation? I've started my new adwords campaign. Before that I took 100 the most important keywords and created separate adgroups with separate ad for every keyword. Each Ad was optimized for each keyword. After that I've created ~10 adgroups with other keywords (~500 keywords in each). My expectation was to have high Quality Score on my first 100 adgroups (b/c each ad was optimized for 1 keyword). Once I added campaign to adwords all keywords got QS 7-9. But few hours later the Quality Score for my 100 adgroups (with 1 ad = 1 keyword) got a Quality Score drop to 4-5. And other adgroups (with many keywords) still have Quality Score 7-9. Few moments: 1. I didn't get any clicks yet. So Google had no ability to change QS according to my CTR. 2. I set a very low bid. (avg bid [from my past experience for this niche] is $0.4, now i set $0.17) So 2 questions: 1. Why QS dropped for high optimized ads? I understand that I will see real picture only in few days, and 2 hours is nothing. But I just want to understand. 2. What is the Bidding strategy for new campaign? Set low bid and increase it slowly, or do opposite - set high bid and decrease it slowly? Thank you very much!