I think the study is biased because it doesn't do a contempory comparrison.  I listen to the broad spectrum of politics from the extreme left of Randi Rhodes, the moderately left Maddow, Mostly moderate Ed Schultz (although left on some issues), Mostly moderate BOR (although right on some issues), and moderately right Hannity.  I don't like Rush, so I don't listen to him...although I can't listen to Randi very long either.  Now if you want to hear some propaganda, listen to Rhodes and Rush.  If the study was actually trying to prove something worthwhile then they would have done best to compare him to one of his contempories, not some guy that most people have never heard and has been dead for years.  And I don't take BOR's side on all issues, I noted he has done some dumb things.  And you also don't see me trying to load up KO's article with a bunch of minor crap either.