Some Yahoo clients now press other media to provide Yahoo-style data on customer response.

FORBES: The Killer Ad Machine

But partnering up seems an unlikely scenario at Yahoo, whose style outwardly friendly and inwardly guarded reflects on Koogle himself.

FORBES: The Killer Ad Machine

The site comes with integrated maps and a Yahoo Answers-style question-and-advice feature.

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That is enough to handle the constant barrage of Yahoo e-mails, iTunes downloads and YouTube-style videoclips.

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But Ms Bartz's abrasive management style has meant there has been considerable turnover in the senior ranks at Yahoo!

ECONOMIST: More trouble for Yahoo!

" Responding to a question about "Twilight" on a Yahoo Answers page, a reader wrote, "I never quit reading a book because I think the style of writing is bad.

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