What is Yahoo! Search?
The Yahoo! Directory and Yahoo! Search are two entirely separate things. The directory is a manually reviewed collection of websites. Yahoo! Search is powered through various search technologies purchased by Yahoo!
Yahoo! Search probably serves over 100 million searches each day. The directory would likely be lucky to serve more than a million searches a day.
Yahoo! Search is powered through a rewrite and combination of different pieces of what was once AltaVista, AllTheWeb, and Inktomi.
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