Table - Net US Online Ad Revenue Share By Company

Based on eMarketer’s latest forecast of US ad spending, the rapid growth of mobile ad revenues at Facebook has helped make the social network the second-largest digital ad seller in the US, behind only Google. This year, Facebook will take in 7.4% of net US digital ad dollars, or $3.17 billion, while Google will account for nearly four in 10, or $17.00 billion. Read the rest at eMarketer.