Review site TripAdvisor may have frantically backpedaled after a Milwaukee Sentinel-Journal expose showed that it had a habit of censoring reviews mentioning blackouts, rape, and suspicious deaths or injuries incurred at certain resorts - specifically Mexican ones, though it remains unclear if other destinations were involved - by adding new functionality warning of potentially dangerous hotels. But the site's belated admission it did wrong might not be enough for the US Federal Trade Commission, which the Sentinel reported this week is potentially investigating whether Tripadvisor acted improperly.