Advertising research specialist AdZone Interactive reports that year-to-date online adspend by US advertisers soared by 21% to an estimated total of $1.5 billion in July.

However, this figure is almost certainly inflated, warns AdZone, as it is based on card rates rather than actual spend.

Topping the list yet again is AOL.com with an estimated spend of $85.8 million, trailed by Yahoo.com with $48.8m and Ebay.com ($33.9m). Other big spenders include CBS.sportsline.com ($27.4m) and FreeLotto.com ($27.2).

News source: Advertising Age - Interactive Daily