Travelers unhappy -- or happy -- with hotel service can ask the hotel worker or manager to wait a minute, pick up an iPhone and quickly dash off a review for TripAdvisor.
Review submission is one of the new twists in TripAdvisor's new iPhone app, which replaces its previous effort, Local Picks in the app store.
Previously, users were able to submit reviews through TripAdvisor's mobile website and the app offers a similar service.
Other new features include flight metasearch for low fares, as well as using the device's GPS capabilities to search for nearby attractions, restaurants and hotels.
The app, TripAdvisor Hotels Flights Restaurants, works for iPhone and iPod touch users in 20 countries spanning North America, Europe, South America and Asia-Pacific, TripAdvisor states. The app comes in 13 languages.