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A fondly loved application may disappear partially due to the obsolescence of the underlying OS given the recent articles about http://www.osnews.com/story/23876/Why_the_OS_Matters and http://www.osnews.com/story/23867/Jean-Louis_Gassee_The_OS_Doesn_t_...
So, does the OS really matter in this case? Ensemble, the most recent incarnation, has remained an OS-interface at the same time as being an office suite with internet access. Another twist to the question.