They all support Silverlight I think - it's just getting people to install it. IE might come with it pre-installed. I don't think think Silverlight will ever match Adobe's installations of Flash on browsers as far as numbers. However, getting 3rd parties like Netflix to embed Silverlight is a step in the right direction. But I think MS has given up on it anyway and will focus on HTML5 instead now.

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>Do you know which browsers don't support silverlight?