Is there a logical limit to how many keywords are effective to use in an AW campaign? I looked through several pages of the forum and have not seen that question asked ...
I'm trying to run a campaign for a pal. I set up about 4 ad groups, each has maybe 15-20 key phrases. She got excited and decided we need to put in as many combinations and keywords as possible.
I did not see in the documentation that there might be a limit to how many I CAN use - but is there some point at which it is not effective to just keep tossing in more keywords?
Thanks so much. This forum is immeasurably helpful!