Micro-blogging via Twitter has really taken off in Japan. In fact, proportionately more Japanese than Americans tweet: 16.3% of Japan's Internet users vs. 9.8% of the US's, according to an article in the Washington Post. Compare that to Facebook use in Japan at only 3% of Net users vs. 62% of US Net users also using Facebook, the article cites Nielsen research as showing. Japan's No. 1 social … [Read more...] about Twitterers in US and Japan