Twitter's country-specific blocking brings hazards and hope
      
          Twitter's move to comply with government requests and block tweets in specific countries could blunt its edge as a political tool, but there may be an upside in helping to unmask censorship, some privacy experts say.                                             
http://rss.macworld.com/click.phdo?i=623ee8647f9d4f62c045a65d36c9cb6f