Microsoft Advertising reported that a social media usage research conducted by Microsoft in Asia-Pacific(APAC) 11 countries and regions.
According to about 3,000 answering online to the questions (375 of them are Japanese), average APAC users are using 3 social networking services. They think only one-forth of their friends list are their close friends. 51% of Japanese answered none of their social network friends were their close friends.
Another interesting difference between Japanese users and other APAC countries is that the primary purpose of personal e-mail account is to contact with family and friends in most countries, whilst for Japanese it is primarily for receiving news alerts.
The Japanese report tells that the more detail is available in English site SaveSocialEnergy.com, but I could not find it on there.
See Also:
9 Out Of 10 Japanese Mobile Users Disinclined For Using Real Name
30% Japanese Sends E-Mail First To Ask If They Can Make Phone Call
