Research
The Advantage of Behavior Targeting Increases Dramatically with Frequency
The first Eye Tracking study ever conducted comparing Behavioral Targeting to Contextual Targeting finds that, on average, the same ads receive +17% more Looks when seen in unrelated-content sites, than when seen in sites specializing in the sale of those types of products.
After the first exposure, this +17% advantage for Behavioral over Contextual Targeting increases dramatically to +54%.
The fact that Behavioral Targeting, unlike Contextual Targeting, tends to build with frequency, suggests that there is a Surprise effect and that it does not wear out, and because of this repeat Surprise effect, the ad is given more chances to engage the user.