I have total of 14 negative keywords for all my campaigns. At this time, I am placing them (the 14 negative keywords) in each ad group. Is it safe, to place these 14 keywords in campaign negative keywords, not in each ad group?
I guess that if I place them in campaign I will make some space for new keywords, but Is it safe to do it? I would not like my adds to be triggered for the word free for example.
Regards, Zoreli