Ryohin Keikaku Co., the company that operates the Muji retail brand selling clothing and household items both domestically and overseas, opened its official page on the U.S. Internet social networking site Facebook in 2010.

An extensive range of products and events it hosts are uploaded on the page along with columns, with titles such as "We would like to introduce you to our 'support kit for going home in the event of an emergency,' " and "This is a simple kit for you to start growing vegetables."

It may look like just another product advertisement on a blog or corporate website, but one of Facebook's advantages for businesses lies in its commenting feature and the "like" icon that gives users the chance to make their own endorsements. Those comments and endorsements are shared by other members on the world's biggest social networking site, which had more than 900 million users as of the end of March.