By Phil Rosenthal | Rock critic Jim DeRogatis on Monday quit the Chicago Sun-Times and will become a blogger for Chicago Public Radio, home to his nationally syndicated radio program since 2005. Sun-Times editors did not respond immediately to outside inquiries about his resignation, and it is not known how, when or if the newspaper plans to replace him.

It is the second time DeRogatis has exited the Sun-Times, where he started in 1992. He left in 1995 to join Rolling Stone, a job that lasted eight months, and was back at the Sun-Times in three years.

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