At this writing, Google still dominates the world of search--so much so that "google" has become a verb. The search giant is not without its challengers, though--especially Bing, Microsoft's rebranded search site, which has quickly gained market share. In an interesting shift, Facebook recently surpassed Google as the most visited Website in the world.
With new competitors popping up all the time, Google will certainly have to fight to remain both popular and relevant to the world at large.
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