I have never worked with JSON before. But due to security limitations it’s the only simple way to get Twitter data in Silverlight. So I decided to do the same sample application for WinRT, Silverlight, WPF and Windows Phone platforms. As usual, there are many different ways to do the same thing. Jokingly, almost all Json stuff, included into the box, is different on different platforms. Perhaps MS guys don't like to re-use code. Finally I’ve found the single common thing, which can be used everywhere.