Bloggers as News Media Trophy Hunters By KATHERINE Q. SEELYE his article was reported by Katharine Q. Seelye, Jacques Steinberg and David F. Gallagher. With the resignation Friday of a top news executive from CNN, bloggers have laid claim to a prominent media career for the second time in five months. In September, conservative bloggers exposed flaws in a report by Dan Rather; he subsequently announced that on March 9 he would step down as anchor of the "CBS Evening News." On Friday, after nearly two weeks of intensifying pressure on the Internet, Eason Jordan, the chief news executive at...