Global Facebook Advertising CPC Rates By Device, December 2012 [CHART]
Overall, mobile display advertising has demonstrated high user engagement, and Facebook is clearly putting a premium on its mobile advertising. Cost-per-click on mobile ads was $1.38 vs. 81 cents on desktop, according to Kenshoo Social. This is also a reflection of the prime real estate Facebook ads receive in a mobile user’s feed. Read the rest at eMarketer.