And Letterman's Late Show page has 234, 000 followers.

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However, NBC was said to be concerned about losing younger viewers to ABC's Jimmy Kimmel, whose "Jimmy Kimmel Live" was moved up to compete with Leno and David Letterman's "Late Show" at the beginning of 2013.

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Without writers on staff to create monologues, shows like CBS's The Late Show With David Letterman and Comedy Central's The Daily Show With Jon Stewart will likely go into repeats fairly quickly.

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