NEW YORK (TheStreet) -- Fix your eyes on Groupon's(GRPN) - Get Report second-quarter earnings, reported yesterday, and you might sense that something is off kilter.

Profit beat expectations, but revenue fell short -- and traders ran as if they had been bit. How did the online coupon company, which has been attracting competition from the likes of

Google

(GOOG) - Get Report

and

Amazon.com

(AMZN) - Get Report

and unflattering comparisons to atrophying Web commerce IPOs like

Facebook

(FB) - Get Report

and

Zynga

(ZNGA) - Get Report

, pull off that trick?

The Associated Press

flailed about without touching upon the essential reason. It said that the weak European economy led less people to rush for services like "laser hair removal."

It also mentioned the cost of paying executives with stock and of acquiring customers, a Chinese joint venture and currency exchange rates, as well as a light forecast for the current quarter.

In a quick-hit piece after the earnings release,

Business Insider

was almost comically mystified, saying: "Despite numbers that look okay on the surface, something problematic must be lurking below."

Uh, OK.

But in a follow-up article,

Business Insider

offered up a concise explanation: Groupon's core business is shrinking -- and how -- while growth is coming from a new division that features suspect accounting.

It wrote this about the new division, called "Goods," which sells physical items: "Groupon recognizes revenue differently than in its core business. With some 'Goods' sales, Groupon is recognizing the total value of the item sold, not just the value that Groupon gets to keep after it sells a coupon."

With apologies to those blaming a gathering level of disinterest in laser hair removal, this is the "something problematic lurking." Groupon's basic business is tanking. It's new business, while growing, is using skeevy accounting.

That scared off traders -- and when you are too skeevy for Wall Street, you are doing something wrong.

At the time of publication, Fuchs had no positions in any of the stocks mentioned in this column.

This article is commentary by an independent contributor, separate from TheStreet's regular news coverage.

Marek Fuchs was a stockbroker for Shearson Lehman Brothers and a money manager before becoming a journalist who wrote The New York Times' "County Lines" column for six years. He also did back-up beat coverage of The New York Knicks for the paper's Sports section for two seasons and covered other professional and collegiate sports. He has contributed frequently to many of the Times' other sections, including National, Metro, Escapes, Style, Real Estate, Arts & Leisure, Travel, Money & Business, Circuits and the Op-Ed Page.

For his "Business Press Maven" column on how business and finance are covered by the media, Fuchs was named best business journalist critic in the nation by the Talking Biz website at The University of North Carolina School of Journalism and Mass Communication. Fuchs is a frequent speaker on the business media, in venues ranging from National Public Radio to the annual conference of the Society of American Business Editors and Writers.

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