While this claim was rather far fetched, I am inclined to agree that unidentified sources can be incredibly helpful in exposing information that the government would prefer to be suppressed (see for example, http://www.collateralmurder.com/). I'm also a bit surprised that no one on this list has mentioned anything at all about the WikiLeaks drama this video sparked that has been all over the internet over the past two weeks.
http://www.newyorker.com/reporting/2010/06/07/100607fa_fact_khatchadourian?currentPage=all
And I am appalled at behavior of Adrian Lamo in turning over the whistleblower to the government after he'd gained the poor man's trust by insisting that he was a journalist protected by shield laws (see http://www.boingboing.net/2010/06/19/wikileaks-a-somewhat.html for all the details). Wired Magazine should give Lamo the boot and censure Kevin Poulson for allowing this to happen. Bradley Manning never wanted to be connected to the leaks, but felt he could not live with himself if he had to conceal his knowledge of these atrocities, and trusted Julian Assange and Wikileaks with his life. Too bad he misplaced his trust with Lamo and Wired.
Terry