Online ads tor each $8.4 bln in 2004, $16.1 bln in 2009

Online advertising spending is expected to nearly double by 2009 to $16.1 bln, JupiterResearch said. Internet advertising will grow 27% this year to $8.4 bln, with double-digit growth for both paid search listings and display ads such as banners. The medium is expected to increase its share of marketers' budgets from 3.5% last year to 6.5% in 2009. Top advertising industry forecasters have predicted total U.S. ad spending growth between 6% and 9% this year on the strength of an improved economy, political campaigns and the summer Olympic Games.