Although no reason was given for the ending of Microsoft Reader, and the format has never been particularly popular, Microsoft Reader was available well before e-paper or Amazon's Kindle. Microsoft Reader was born in 2000.
Microsoft wrote:CLOSING THE BOOK
Microsoft is discontinuing Microsoft Reader effective August 30, 2012, which includes download access of the Microsoft Reader application from the Microsoft Reader website. However, customers may continue to use and access the Microsoft Reader application and any .lit materials on their PCs or devices after the discontinuation on August 30, 2012. New content for purchase from retailers in the .lit format will be discontinued on November 8, 2011.
http://www.microsoft.com/reader/default.aspx
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