Tech company with an exclamation point (5)

I believe the answer is:

yahoo

(Other definitions for yahoo that I've seen before include "Brutal lout" , "Brutish race of people in "Gulliver's Travels"" , "service provider" , "One of Dean Swift's brutish people" , "Boorish lout (after Swift)" .)

I've seen this clue in the LA Times.

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