Hi,
The short answer is that AdWords has a lot of options for triggering Ads,
and keywords is just one of them. And since AdWords API exposes the AdWords
features as much as possible, we have a lot of criterion types.
I'd recommend
http://support.google.com/adwords/certification/bin/static.py?
hi, everybody,
I don't understand "Criterion", Why it have so many types? Keyword,
Placement, CriterionUserInterest, CriterionUserList, Vertical,
and Product. Do they have relationship? Keyword is the only one I
know how to use and how to show in AD. What does Placement use for?
What do other
