Facebook mobile-ad revenue expected to grow, but still looking for business model

By Erin Dismeier

Facebook's mobile-ad revenue is projected to grow, but
the service is still looking for a sustainable mobile model.

Facebook or Twitter?  Even though Facebook achieved popularity sooner, a recent report by online marketing-research firm eMarketer shows Twitter in 2012 will take in more U.S. mobile-ad revenue than Facebook.

This is partially because Promoted Tweets, a huge ad-revenue source for Twitter, are well-integrated into the service's "core user experience," making the "shift toward displaying mobile advertisements relatively simple," according to eMarketer. 

"Dick Costolo, Twitter CEO, boasts that Twitter was developed with mobile in mind," according to Digital Trends. "As the company began selling mobile ads earlier this year, just weeks into its mobile ad program, the company garnered more ad revenue from its Promoted Tweets program on its mobile platform than on its desktop app."