Disappointing earnings at Google, Microsoft and other tech firms indicate the pressure being put on companies to monetize mobile advertising and other services, according to Reuters.
Google shares plunged after the premature release on Thursday of a disappointing earnings report, The New York Times reports.
A dip in earnings at Microsoft is less important than the company's shift to a post-PC world with the coming debut of its new Windows 8 operating system and its Surface tablet computer, according to this CNET analysis.
Yahoo will shutter its South Korean operations to focus on more profitable units, Bloomberg reports.
Yelp will alert consumers to companies that it thinks are posting fake reviews, the Los Angeles Times reports.
CNN uses news-reading app Zite to aggregate news online, Forbes reports.
Gilt Group puts luxury travel site Jetsetter on the block, the Wall Street Journal reports.
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