On a day they had contracted to run ads for CNBC, two websites owned by Dow Jones & Co. instead ran ads for CNBC's new competitor, Fox Business Network, The New York Times reports. Both MarketWatch and The Wall Street Journal's website filled up the exact spaces CNBC had purchased with rotating ads that included some for Fox Business Network. They were accompanied by links to the network's website. CNBC concluded a deal with Dow Jones more than a month ago to secure the ad placement. The cable business channel paid about $87,000 for the ads. The cable business channel paid about $87,000 for the ads. See Wall Street Journal's version of the story here.