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What I'm saying is that if you are seeing that many off target ads, then Google is obviously having some difficulty figuring out what you're about.I don't see how. They have been extremely good over the years. Only since they took over doubleclick, was the start of the decline... and progresses to be worse as the weeks go on.
Ads are ranked according to the number of impressions they received, or will likely receive in the case of upcoming ads, so the first ads shown are the most important to review.