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Is the Tech Bubble Popping? Ping Pong Offers an Answer


Ping-pong at Pivotal, San Francisco

Ping-pong playing gets intense at Pivotals San Francisco office, so the software company installed netting to catch errant balls.

Credit: Pivotal

Twitter's gloomy quarterly report last week unsettled investors. They might have anticipated trouble more than a year ago had they noticed one key indicator.

From The Wall Street Journal
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