Web company with a bang (5)

I believe the answer is:

yahoo

(Other definitions for yahoo that I've seen before include "Brutish lout" , "Brutish race of people in "Gulliver's Travels"" , "Swiftian ruffian" , "Uncivilised brute(Swift)" , "Gulliver's animal in human form" .)

I've seen this clue in the LA Times.

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