Since when is Keith Olbermann is mainstream?

I was stunned by The Sun's description of Keith Olbermann's firing from Current TV as, "A mainstream media figure washes out at Current." You had me for a minute, then I realized the headline appeared onApril Fool's Day.

How else to attribute The Sun referring to Mr. Olbermann as a "mainstream media figure?"

Joseph L. Holt, Chestertown