Yelp, online product reviews, and trust.
But the wolf jumped up more quickly than anyone could have expected and, gnashing her teeth, flew at the yellowish borzoi, which, with a piercing yelp, fell with its head on the ground, bleeding from a gash in its side.
The system will also look for anything they've written publicly about this place (Yelp, Facebook, personal blog) and which superlatives they used to describe it.
These are P. megapodius, called El Turco by the natives, which is noticeable for its ungainly appearance and awkward gait; the P. albicollis, which inhabits barren hillsides and is called tapacollo from the manner of carrying its tail turned far forward over its back; the P. rubecula, of Chiloe, a small timid denizen of the gloomy forest, called the cheucau or chuca, whose two or three notes are believed by the superstitious natives to be auguries of impending success or disaster; and an allied species (Hylactes Tarnii, King) called the guid-guid or barking bird, whose cry is a close imitation of the yelp of a small dog.
You could see which restaurants were rated the highest on Yelp, which ones certain reviewers liked, and so on.
And the Cossacks looked round in surprise at the sound, like the yelp of a dog, with which Denisov turned away, walked to the wattle fence, and seized hold of it.
In dark winter mornings, or in short winter afternoons, I sometimes heard a pack of hounds threading all the woods with hounding cry and yelp, unable to resist the instinct of the chase, and the note of the hunting-horn at intervals, proving that man was in the rear.