Last month travel Web sites and blogs began to log and discuss the red warnings, which read: "TripAdvisor has reasonable cause to believe that either this property or individuals associated with the property may have attempted to manipulate our popularity index by interfering with the unbiased nature of our reviews. Please take this into consideration when researching your travel plans."

One industry Web site,, said it found 92 hotels with the label in June, from a boutique hotel in Hawaii to a Radisson in Fort Worth, Texas. The disclaimers drew a lot of attention that month and by Monday, only 16 remained, said Tucker, co-author

The disclaimers have an expiration date that varies with each hotel, TripAdvisor spokesman Brooke Ferencsiksaid. He said TripAdvisor works with hotel owners to get the warnings removed, often after they promise to stop breaking the site's rules.

"Not only does it give our travelers fair warning," he said. "But also it should be a deterrent for any property that's thinking about trying to game the system."

Get the full story at The Associated Press