Note: Nielsen Online, AdRelevance service uses a proprietary methodology for estimating online advertising expenditures and only takes into account image-based technologies and advertising sold per CPM. Data does not reflect house advertising activity, strategic partnerships between publishers and advertisers, or text units, compound image/text ads, paid search, sponsorships, email, units contained within applications (e.g., messengers [...]
Source:Top 10 Site Genres by Image-Based Impressions – September 2009
