A Search Engine Watch Forums thread describes how Google placed active keywords into a hidden inactive keyword state. Basically, Google "red flagged" the keyword because the words in the ad triggered a flag. The word was "kids" and it placed an ad campaign on hold, without the keyword displaying "inactive" for fifteen days prior to the SEM noticing.
Can you blame Google for flagging keywords? Nah, it is a good thing. But Google should notify the advertiser by telling them the keyword is inactive or under-review, or something.
This is a nice little tidbit for SEMs to know, if they did not already.
Forum discussion at Search Engine Watch Forums.
