It's inescapable that a big part of the Twitter experience (and its allure) has been its strong mobile component. Millions of people utilize SMS, Twitter mobile, and third party apps to tweet and read status updates on-the-go.
The mobile component of Twitter hasn't arrived overnight though, especially for its international users. It was only a few days ago when Twitter via SMS became available in India, for example.
Even Japanese users, which have their own native-language version of Twitter, have gone without a mobile web version. Until now, at least. According to the Associated Press, Twitter has launched a mobile version for Twitter Japan as part of its effort to make inroads into the Asian market.
The new version comes as a long overdue component of tweeting in Japan. Many Japanese users utilize different apps to access Twitter via mobile currently, as the English mobile site is incompatible with a lot of the Japanese features. It seemed clear that a mobile version for Japanese users was going to be necessary to spur new growth.