Social network ad market to grow to $2.2 bln in 2008

$920 mln was spent on social networking sites in the US in 2007 and eMarketer projects the market to reach $1.6 bln in 2008. Worldwide, social network advertising spending is expected to grow by 81%, to $2.2 bln in 2008 from $1.2 bln in 2007

Online social network ad to grow to $2.2 bln in 2008