According to research carried out by eMarketer, US marketeers will spend over $3 billion on social network advertisements this year. That would mean that ad spend in this region would see growth levels of 55% in comparison with 2010.

The most recent forecast is a far more positive outcome than previous estimations, with the 2011 figures looking to beat initial predictions by some $1 billion. The rise will also increase...Read more at http://www.soldlab.com/social-media-advertising-2011/