Clive Thompson focuses on real-time search:
If you hunt for "Michael Jackson" on a traditional engine like Ask.com or Bing, the vast majority of the links remain the same day to day. Authority changes slowly on the "old" Web. But real-time search engines deliver different, updated results almost every time. The creators of these new engines argue that their goal isn't to answer questions à la Googlebut to organize experience into a keyhole glimpse of what the world is doing at this very moment.
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