After hosting nearly three hours of today's radio show, commentator Rush Limbaugh shocked his audience at the end of the broadcast by announcing that he is in an advanced stage of lung cancer. He said that he will begin treatment immediately and will miss some days from work, adding that he intends to continue broadcasting the daily show for as long as possible. Limbaugh's audience is measured at between 16 and 19 million people in various surveys. "The Rush Limbaugh Show" airs on hundreds of American radio stations, most of which are owned by iHeart Media. From The New York Times: In spite of Michelle Obama's directive that Democrats "take the high road," many Liberals have been rejoicing online after news of