Victoria Petrock

o industries such as telecommunications, financial services, automotive and more, retailers spend more on Internet advertising than any other industry, according to new eMarketer estimates that break down total U.S. online ad spending by vertical. Retailers are expected to spend $5.73 billion on online advertising in 2011, up from $5.16 billion in 2010, accounting for more than one in every five online ad dollars. While the retail industry will see double-digit growth of 11 percent in 2011, other verticals will increase spending more quickly. Consumer packaged goods (CPG) spending will increase 29 percent to $2.66 billion this year, automotive