This article was written in the Wall Street Journal after I discovered a problem with Google’s Session-based Broad Match.

Read The Wall Street Journal article.

Search “Session-based Broad Match” in Bing and you will find knowledgeable advertisers who are very unhappy with the new Google.  It seems that Google’s shift from contextual to behavioral targeting has dramatically increased display rates of irrelevant ads that are clicked on at great expense to advertisers – many times without their knowledge. A Bing representative said they specifically avoid doing this.

“Session-based Broad Match,” which is a recent progression from “Broad Match”, could artificially inflate Google’s revenue to the detriment of advertisers.  View “See Search Terms” within the Keywords section of Google Adwords to see this problem.  The algorithm is not always right. Google should admit it, fix it and reimburse advertisers.