Email a copy of "Ad Spending on Social Networks to Reach $2 Billion by 2010" to a friend.
Just four months ago, marketers were sitting on the sidelines of social networks and watching the traffic surge. Now, advertising on social networks has become a top priority. In 2007, ad spending on US social networking sites is expected to spike to $865 million from $350 million in 2006, according to eMarketer's new report, Social Network...
