Citing a recovering economy and increasing marketer interest in the space, research company eMarketer recently raised its 2010 spending forecast for advertising on social networks by nearly 30% to $1.68 billion domestically.

Within the social media world, however, a number of trends are dictating how, why and where money gets spent — trends that will push the industry past the $2 billion mark in 2011, according to eMarketer’s projections.

View the full article here: http://mashable.com/2010/09/10/social-media-advertising-boom/