So how do you find non-English-writing Twits?
Serendipity: Search Twitter for a term you’re interested in, see who’s talking about it. For example, I searched for “Dokdo,” hoping to learn more about the controversy between Japan and South Korea over the islands known as Dokdo in Korean and Takeshima in Japanese, and found Mojin, a Japanese Twit I now follow.
Twitter Search’s Advanced Search Page: Select the language you want, put in words you’re interested in, and see what you get. Note that for Japanese I’ve found it to be a little difficult to use actual Japanese words for some reason…
Use FriendFeed’s Rooms to find interesting Twits in your target language. Here’s a Japanese Room I belong to; here’s a Japanese News Room, although more of the links are in English.
Search the followers and followings of a Twit you like. For example, I like the NHK (Japan’s version of PBS or BBC) Twitter feed, and have found some interesting Twits to follow from the list of who NHK follows.