Google search has two huge problems: SEO and censorship. Search for anything related to products/torrents/streams/politics on Google and your results will SUCK, due to one of the two reasons stated above.
The recent Yandex hack/leak has the cynic in me connecting the dots and, seeing how Google search seems to be facing REAL threats to it's dominance since it's creation... maybe some guys with the deepest pockets in the world are starting to enter WAR mode.
Destroying Yandex advantages on the SEO battlefield by way of divulging their parameters to the world would be the Franz Ferdinand assassination moment of the Great Search War.