In only three weeks, ABC's daily webcast World News Now has become the #1 most downloaded news podcast on iTunes. According to rankings posted on the iTunes Music Store, the program beats CNN News Update (#2), Meet the Press (#3), NewsHour with Jim Lehrer (#4), and Wall Street Journal Report (#5). (Nightline comes in at #9.)

And among all the downloaded podcasts, World News Now ranks a very impressive #12. The Onion Radio News is #1, though...