I'm really thinking about restricting my tweets to tech issues only.
Tweets in Japanese have been getting too political these days, especially after the 3-11 accidents and disasters. People are less restrictive on expressing op-ed tweets, and the tweets further invoke even more harsh exchanges of discussions without careful thoughts, often lead to blackmailing.
I do understand people in Japan including myself have legitimate fears against the possible nuclear and predicted earthquake/tsunami disasters. And I accept people have rights to openly discuss those matters. Twitter, however, is not a good place to have discussions with showing sufficient clarifications and enough pieces of evidence.