43% of online buyers were delivered to retail sites by search engines

Forrester Research and Shop.org survey says that in 2004, search engine marketing appeared as the clear leader as a source of new customers, with retailers reporting that search engine marketing delivered 43% of overall customers to their sites. In 2004, 87% of retailers who participated in the study used pay-for-performance search placement and spent more than twice as much from their marketing budgets on this category than they did in 2003 ($877,630 in 2004 vs. $399,923 in 2003).