Revinate analysed its data to look at the distributions of all the reviews for the thousands of hotels that the company monitors. Here's what they found: - 27.5% come from TripAdvisor - 18.25% come from Hotels.com - 18.02% come from Priceline - 10.11% come from Expedia - 6.6% come from Orbitz - 5.73% come from Booking.com And the other review sites each have less than 5% share. Source: The Revinate Blog