“This year the combined advertising revenues of Google and Yahoo! will rival the combined prime-time ad revenues of Americas three big television networks, ABC, CBS and NBC, predicts Advertising Age. It will, says the trade magazine, represent a watershed moment in the evolution of the internet as an advertising medium. A 30-second prime-time TV ad was once considered the most effectiveand the most expensiveform of advertising. But that was before the internet got going.”

— Economist.com on an article in this week’s Advertising Age. More of the same at Yahoo!