Even as its Nielsen Media Research unit hedges its bets on the promising new media technology for measuring TV audiences, VNU is moving forward with plans to develop a joint venture with Arbitron that would develop an ambitious national marketing research panel based on Arbitron's portable people meter system.

A new ad from conservative political action group RightMarch.com demanding "accountability from Dan Rather and CBS News" over the forged documents questioning President George W. Bush's service in the Texas Air National Guard that was supposed to run in USA Today nationwide last week was pulled at the last minute by the newspaper for "legal" issues over the content of the ad.

The clock is ticking on the settlement offers Newsday has made to advertisers that were charged at inflated circulation levels.

NBC announced yesterday that Conan O'Brien would succeed Jay Leno as host of the "Tonight" show when Mr. Leno's contract expired in 2009, cutting off early efforts by competitors to steal away Mr. O'Brien.

"American Idol" on Fox has become the most expensive series on broadcast networks for advertisers, according to an annual survey of prime-time pricing released yesterday by Advertising Age.

Toyota today launches an integrated marketing campaign that introduces the tagline "Moving forward." That positioning replaces "Get the feeling," and the new work shows how Toyota vehicles can play important roles in the lives of young adults. Most of the new TV ads feature the Camry.

Here is a look back at some of the highlights, lowlights and sidelights of the first Advertising Week in New York City, which took place last Monday through Friday.

Shares in Havas surged more than 11 percent on Monday after Martin Sorrell, the chief executive of WPP, told a newspaper he had discussed his French advertising rival with its top shareholder Vincent Bollore.

Dan Rather's acknowledgment that he erred in broadcasting a recent "60 Minutes'' report about President Bush's National Guard service has further complicated two of the most delicate questions in television news: when will Mr. Rather relinquish the anchor chair of "The CBS Evening News,'' and to whom?

Madison Avenue was advertising itself last week to rejuvenate its lackluster image with consumers, clients and the next generation of young people who might choose it as a career.