This Tuesday, May 7, 2013, photo, Greg Leffler, a site reliability engineer at LinkedIn, works outside his company's Mountain View, Calif., headquarters. LinkedIn and Facebook celebrate the ... more 
This Tuesday, May 7, 2013, photo, Greg Leffler, a site reliability engineer at LinkedIn, works outside his company's Mountain View, Calif., headquarters. LinkedIn and Facebook celebrate the anniversaries of their IPOs just a few days apart this week. But the companies' experiences as publicly traded entities couldn't be more different. LinkedIn promotes its service as a stepping stone to a more enriching career. As it turns out, the professional networking company's IPO was a great place to start a rewarding investment portfolio, too. LinkedIn's stock has nearly quadrupled in value from its $45 IPO price two years ago. (AP Photo/Noah Berger) less 
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Associated Press | Photo By Noah Berger
Mon, May 13, 2013 4:48 PM EDT