How is Groupon Japan doing exactly? Daily coupon search service CP4U posted a study [JP, PDF] today, in which they analyzed the sales numbers of Groupon and a total of 146 Japanese clones in December 2010 and January 2011.
The chart below (via Asiajin) shows that Groupon generated 1.1 billion yen in revenue ($13 million) in December 2010 and 984 million yen ($11.8 million) in January 2011.
Groupon leads the Japanese market ahead of Ponpare, a clone offered by Japanese web giant Recruit.
