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The webapp seem to be built using Twitter Bootstrap and Heroku. I would have thought Chinese programmers who resort to copying would be using older technology.

• evanwalsh 15y ago
  The app at chao.heroku.com is not the copy.
  • jackjun 15y ago
    Oops, you are right. However, chao.heroku.com still seem to be made for China by a Chinese author.