As a "professional advertiser" myself with a deep background in search this is spot on. Also, people don't poke around enough in the help files or in the setti

As a "professional advertiser" myself with a deep background in search this is spot on. Also, people don't poke around enough in the help files or in the settings for their targeting to see that there are easy ways to avoid this from the start. For example, Site Category Exclusions would be a good start, although the specific negatives they mention are good to note as well since I'm not sure the category exclusions will catch everything.