Tomohiko Kezuka is a Japanese social media marketer who I met on Mixi, Japan’s Facebook-like social networking site. By mashing up a little of my sketchy Japanese and his rather good English, we were able to discuss Japanese social media - and how people and companies there are responding to it. How old are you, where do you live, and what do you do for work? “I am 24 years old and I live in Shibu