It's turned into something of a week for TV hosts, if not to bite, then at least to nibble hard on the hands that feed them . . . First, as noted here, on Friday Joe Scarborough passed along the comment of an unnamed conservative biggie who wondered "what the hell [Rand Paul] was doing on MSNBC?", where during an interview with Rachel Maddow he caused controversy with his comments on the Civil Rights Act. Today, it was Howard Kurtz's turn. In the wake of Campbell Brown's withdrawal from CNN, in which she cited her show's poor ratings, Kurtz, host...