We barely know what to say. In 2015,Trivago.com was #2 in the rankings. No longer. Yes, Trivago has a lovely and intuitive interface, speedy refreshes, and a nice set of filters. However, beyond the cosmetics, there was no single search or metric on which it beat the competition. It did manage to match the best price found by several others on the two priciest Rome hotels (and came close on a London one), yet even that was marred by the fact that the prices it initially displayed turned out to be much higher once you clicked through to the booking sites. (We only counted the actual prices, not those initial too-good-to-be-true results.) Embarrassingly, the best price it found on a Quality Inn in Orlando was nearly twice what every other site returned. Most confusingly, although it claims to canvass more than 250 sites, some of the engines it claims to survey beat it when we tested them separately. Perhaps Trivago needs to spend a little less on those incessant commercials and invest more in algorithms.