Shira Ovide, Columnist

Within Facebook's Strength Lies a Weakness

Price increases typically indicate an erosion in natural growth potential.
Photographer: Daniel Leal-Olivas/AFP/Getty Images
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Facebook Inc. had countless conflagrations in 2017, but financially it was on fire in a good way. Revenue climbed 47 percent through the first nine months of 2017. It generated a remarkable 46 cents of operating profit for each dollar of revenue, and its stock price shot up more than 50 percent.

Facebook is the internet's best combination of quickly increasing sales, fertile profits, large market share in a valuable category and potential future growth from fresh areas.