Online ad spending will surge to $18.9 billion by 2010--up about 59 percent from an estimated $11.9 billion this year, according to a report released Monday by Jupiter Research. Spending on search
will account for $7.5 billion in 2010, compared to $7.1 billion on display advertising. This year, by contrast, online marketers will spend an estimated $5.1 billion on display advertising and $4.2
billion on search. -- Wendy Davis
