The Changing Faces of Tech Exuberance

Move over Pets.com—this time it's Clinkle

Mark Zuckerberg (left) and Chris Hughes, creators of Facebook, at Eliot House at Harvard University in Cambridge, Mass., on May 14, 2004. Facebook was created three months earlier, in February 2004.

Photographer: Rick Friedman/Corbis

The Nasdaq has just passed the record it set 15 years ago, on March 10, 2000, before plummeting 78 percent when the Internet bubble burst.

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