Technology marketers were the biggest online advertisers in October, shelling out $188 million for around 17 billion Internet impressions, according to AdZone. The second-biggest online spenders were businesses, such as online classified companies, advertising agencies, and trade show marketers. As a group, they bought about 8.2 billion impressions for $90 million--half as much as computer companies or other technology marketers.
Retail merchants came in third at 8.5 billion impressions for $87 million, and banks, mortgage companies, and other financial services providers were the fourth-largest online advertisers--purchasing 7.1 billion impressions for about $80 million.
Online ad spending for the weeks before and after Thanksgiving showed estimated expenditures of $235 million for the week ending Dec. 1, up from $226 for the week ending Nov. 24.