According to a new report from Forrester Research, interactive marketing will grow to near $55 billion by 2014, but some industries -- like consumer goods, automotive, and media and entertainment -- will grow interactive investment faster than others. Big brand advertisers -- like media and entertainment, consumer goods, automotive, and health care firms -- spend less online today than direct marketers, according to Forrester. However, they also have the highest growth potential. The B2B category -- like accounting firms, consultancies, and agencies - will stay at about 9% of the overall interactive pie over the next five years, growing from $2.3 billion today to $4.8 billion in 2014 as B2B marketers adopt emerging media and improve the sophistication of existing efforts. - Marc Baumann