What is interesting is that Yandex's search algorithm is rooted in the highly inflected and very peculiar Russian language. Words can take on some 20 different endings to indicate their relationship to one another. Like the many other non-English languages, this inflection makes the language of Russian precise, but makes search extremely difficult. Google fetches the exact word combination you enter into the search bar, leaving out the slightly different forms that mean similar things. However, Yandex is unique in that it does catch the inflection. Fortune has written an interesting article on Yandex, and my favourite part is its examination into the unique features of this Russian search giant:
While some of its services are similar to offerings available in the U.S. (blog rankings, online banking), it also has developed some applications that only Russians can enjoy, such as an image search engine that eliminates repeated images, a portrait filter that ferrets out faces in an image search, and a real-time traffic report that taps into users' roving cellphone signals to monitor how quickly people are moving through crowded roads in more than a dozen Russian cities.