US Government Security Wiki

Wired News: U.S. Adds Wiki to Spy Arsenal

The office of U.S. intelligence czar John Negroponte announced Intellipedia, which allows intelligence analysts and other officials to collaboratively add and edit content on the government's classified Intelink Web much like its more famous namesake on the world wide web.

If this wiki is restricted to those who have legitimate access to sensitive information, it should be an excellent way to ensure that all the different groups of the government have up-to-date access to the best knowledge that each of the separate divisions has at its disposal. Of course, this presumes that the separate government agencies develop a culture of sharing information rather than hoarding it to protect local operations.