Talk about a stealth operation. About a month ago, Google changed its search algorithm. It was done so quietly, and so smoothly, that no one detected anything new.
But the move represents a big change in search — akin to replacing the engine of a 1950s car, said Danny Sullivan of industry blog Search Engine Land.
“It’s fair to say the general public seemed not to have noticed that Google ripped out its engine while driving down the road and replaced it with something else.”
Google said it made the change because users are asking longer and more complex questions and are searching more often on mobile phones with voice search.
The new algorithm is called Hummingbird, because it's precise and fast, says Google. Previously — since 1998, as Google just celebrated its 15th birthday — the search giant matched keywords in a query to the same words on Web pages. Hummingbird represents a shift to understanding the meaning of phrases in a query, and shows Web pages that more accurately match that meaning.