Note: Nielsen/NetRatings AdRelevance service uses a proprietary methodology for estimating online advertising expenditures and takes into account only image-based technologies and advertising sold per CPM. Above data does not reflect house advertising activity, strategic partnerships between publishers and advertisers, or text units, paid search, sponsorships, email, units contained within applications (e.g., messengers and pre-rolls) or performance-based advertising.

Consumers Express Preference for Contextually Relevant Ads
Contextually relevant ads are generally perceived to be less of a privacy concern than ads based on online behavior.