The New York Times’ Bill Carter follows up on his scoop yesterday regarding the cancelled CNBC ads by writing that FBN ads took the CNBC ads place on the Marketwatch and Wall Street Journal websites…

Dow Jones executives declined to comment on the reasons the contract was broken or why Fox was rewarded with the ad placements that CNBC had sought. Robert Christie, a spokesman for Dow Jones, said he would not go beyond comments made Sunday, in which he said the company reserved the right to alter the timing of advertising.

But one Dow Jones executive, who asked not to be identified because he was not authorized to speak for the company, said that the issues probably turned on the links between the Fox Business site and MarketWatch.

The executive said that those planned cross-links would have created a situation where an Internet user could have linked from Fox Business to MarketWatch and run directly into ads for CNBC. That is what the Dow Jones executives were trying to avoid, the executive said. He did not explain why Dow Jones had also canceled CNBC’s WSJ.com ads.

The decision to oust CNBC in favor of Fox Business brought up an issue that was often discussed during the News Corporation’s negotiations to purchase Dow Jones.