Advertising - Newspapers may face ad difficulties on Web sites, too - NYTimes.com

It was a good day for newspaper Web sites when Mercedes-Benz USA introduced its updated E-Class cars this summer. Mercedes bought out the ad space on the home pages of The Washington Post, The Wall Street Journal and The New York Times, and had those sites create special 3-D ads for them, at an estimated cost of $100,000 a site.

The days after were not as good. While Mercedes was happy with the newspaper sites’ performance, it shifted money to cheaper, more tightly aimed ads bought through networks, which bundle ad space from many Web sites...