misterjinx - 6:15 pm on Jan 12, 2011 (gmt 0)

My 2 cents to this thread... of course quality score a factor you need to focus on, manage and constantly keep under control.

Starting from October there were 2 or 3 issues about quality score, like Google was trying to update its algo and rolled back more than one time.

Another interesting post I read in December (maybe in SearchEngineLand, but I am not sure) is that comparing recently a lot of campaigns and accounts a company realized that the differences between a quite good quality score like 7 compared to lower values like 4 or 3 weren't so sensible to CPC increase like in the past and low quality score ranked very well on top positions.