Hi,
I'm not an expert with the web frontend, but my understanding is that
frontend adds up impression only for ClickType=Headline, but cost and
clicks for every clicktype. You could verify this by turning on
Segmentation in the UI and looking at one Ad at a time. As Adam mentioned,
exclude Cli
If you include ClickType, you will have duplicate data as described here:
http://code.google.com/apis/adwords/docs/appendix/reports.html#ad
" Since ads can serve with multiple click types displayed, impressions may
be double counted and the totals may not be accurate. "
The problem is when an a