eMarketer predicts that social network advertising will account for nearly 11% of all online ad spending in the United States by the end of this year. According to the research firm, US marketers will spend a little over $3 billion to advertise on social networking sites this year, up 55 percent from the $1.99 billion advertisers devoted to social networks in 2010.
eMarketer projects this number will rise by a further 27.7% next year to reach nearly $4 billion.
The 2011 forecast for online ad spending in the United States is $1 billion higher than eMarketer’s last estimate of US social network ad spending, made in August 2010.
The primary driver of the change in projected spending is greater ad spending on – you guessed it – Facebook, the company says.