Tribune Company, the publisher of Chicago Tribune, has blamed Google  for the 2002 United Airlines bankruptcy report in the paper resurfacing on the internet over the weekend, saying its automated search agent "Googlebot" could not differentiate between "breaking news" and "frequently viewed" stories on the websites of its newspapers.

The publisher said it had identified problems with Googlebot months ago and asked Google to stop using Googlebot to crawl newspaper websites, including The Sun Sentinel (Ft. Lauderdale), for inclusion in Google News. Despite this request, Google continued using Googlebot to crawl The Sun Sentinel's website.

"Despite the company's earlier request and the confusion caused by Googlebot and Google News earlier this week, we believe that Googlebot continues to misclassify stories," the publisher said in a statement.

Tribune also released a summary of the sequence of events started by Googlebot's crawling The Sun Sentinel's website in the late-evening and early- morning hours of 6 September and 7 September, which says:

"The article, headlined "United Airlines Files for Bankruptcy," was originally published in the Chicago Tribune in 2002, and appeared on the newspaper's website (See: Six-year old bankruptcy news sends UA plummeting). It then became part of the online database of Tribune's newspapers. Our records indicate that the Googlebot crawled this story as recently as September 2 and September 3 and apparently treated it as old news.

"On 7 September  2008 at 1:00:34 ET, (Sept. 6, 2008, 10:00:34 PT) our records indicate that the article received a single visit. Given the fact that it was the middle of the night, traffic to the business section of the Sun Sentinel site was very low at the time. We believe that this single visit resulted in a link to the old article being created on a dynamic portion of the Sun Sentinel's business section under a tab called "Popular Stories Business: Most Viewed."

"Again, no new story was published and the old story was not re-published --- a link to the old story was merely created. The URL for the old story did not change when the link appeared.

"On September 7, at 1:36:03 ET (Sept. 6, 10:36:03) a user of the Sun Sentinel's website, viewing a story about airline policies regarding cancelled flights, clicked on the link to the old story under the "Popular Stories Business: Most Viewed" tab. Fifty-two seconds later, at 1:36:57 ET (10:36:57 PT), Googlebot visited the Sun Sentinel's website again and crawled the story.

"This time, despite the fact that the URL to the old story hadn't changed, despite the fact that Googlebot had seen this story previously, it was apparently treated as though it was breaking news. Shortly thereafter, Google provided a link to the old story on Google News and dated it September 6, 2008. Google's dating the story on Google News made it appear current to Google News users.

"The first referral to the story from the link provided by Google News came just three minutes later, at 1:39:59 ET (10:39:59 PT).

"Traffic to the old story increased during the course of the day, Sunday, September 7, with the bulk of it being referrals from Google. On Monday, September 8, traffic increased even more after a summary of the Google News story was made available to subscribers of Bloomberg News."

Tribune is America's largest employee-owned media company, operating businesses in publishing, interactive and broadcasting. In publishing, Tribune's leading daily newspapers include the Los Angeles Times, Chicago Tribune, The Baltimore Sun, Sun Sentinel (South Florida), Orlando Sentinel, Hartford Courant, Morning Call and Daily Press. The company's broadcasting group operates 23 television stations, WGN America on national cable, Chicago's WGN-AM and the Chicago Cubs baseball team. Popular news and information websites complement Tribune's print and broadcast properties and extend the company's nationwide audience.