Travelers using the revised TripAdvisor application can add reviews of their own discoveries, among other changes, Rimma Kats writes. The app adds video and photo-sharing features for those with iOS 6 or Android 2.2 and up, and has aligned with Samsung to be preinstalled in the Galaxy S4. "Samsung is using TripAdvisor content -- millions of photos and over 100 million reviews and opinions -- to power its own travel apps," TripAdvisor's Alison Croyle says.

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