Poor Groupon. First, it had to restate its earnings from a "gross profit" of $270 million to an actual loss of $413 million, then the wheels of its IPO wagon started falling off. Now this bad news: a study by computer scientists at Cornell found that partnering with Groupon actually hurt a restaurant's reputation.

These guys have studied over 16,000 Groupon deals in 20 US cities between January and July this year. They monitored each deal every ten minutes or so to determine how sales varied over time and also counted the number of Facebook likes that each deal generated.

At the same time, they collected Yelp reviews--some 56,000 of them for 2,332 merchants who ran 2,496 deals--examining how merchant reputations changed before and after a Groupon deal. [...]

But their most controversial finding is that a Groupon deal seems to have an adverse impact on reputation as measured by Yelp ratings. Their analysis shows that while the number of reviews increases signifificantly due to daily deals, average rating scores from reviewers who mention daily deals are about 10% lower than scores of their peers.

So these Grouponers (or are they Grouponies?) are unhappy with the service even with 50% off coupon? Sounds like a case for this Tumblr blog!

Link - via bon appétit