Japan's most famous SNS Company are on Sale?

Some rumors say Mixi, the most famous SNS company is on sale now. According to the company's quarterly announcemnt, the most recent users of the service reached by 27.1 million users. Meanwhile, it also disclosed that 12.1 million users had never logged in to the account for a month. Rumor says that the founder and still 55% share holder, Mr.Kenji Kasahara, is looking for the candidates to sell his entire stake. The company was established in 1997 and started the operation of its SNS service since 2004. Now it is a public traded company at Tokyo Mother's stock exchange. After rumors has been spread, the stock price is going up. So, let's see if this rumor is true or not. Mr. Kenji Kasahara President of Mixi Corp.