Lame_Wolf - 12:37 am on Nov 24, 2011 (gmt 0)
When you all calculate your "CTR" do you look at Clicks per page (which could have 1-3 ad blocks), Clicks per ad block (which could have 1-5 ads) or Clicks per ad, which would ideally be the lowest common denominator. Which does G look at to determine if your site CTR is too high? Each is manipulable to an extent in various ways, but which to manipulate?
Personally, I look at the overall CTR. ie. The whole account.