TripAdvisor is now competing with Priceline’s Kayak and Expedia’s Trivago in hotel metasearch, with travelers who want to book a hotel shuffled off to an OTA or hotel website to complete the actual booking. TripAdvisor already has transaction sites in FlipKey and Holiday Lettings for vacation rentals, and Tingo for hotel bookings, and could be interested in acquiring an OTA for e-commerce experience, or another metasearch player, maybe a Hipmunk, Room 77 or an international player, to move the hotel metasearch business forward.