From the comments section of this posting on Secrecy News, I found a link to an article on Federal Computer Week regarding usage of wikis at the CIA.
This passage is of note:
Wikis and blogs allow real-time analysis and reaction to intelligence information to occur as quickly as users can update information, Andrus said. “It just happens, just like an ant hill happens."
Blogs can be used to track and share individuals’ intellectual capital, especially their disagreements and mistakes, Andrus said. Wikis can aggregate common knowledge and wisdom, he said, and they don’t require participants to get permission to act or update.
“Wikis and blogs allow us to stand on the shoulders of others and have brilliant ideas we would not have had otherwise in the service of protecting our country,” Andrus said.
The CIA already has more than 1,000 internal blogs and an internal wiki with about 10,000 pages, Andrus said. To encourage employees to release information, the agency had to change its policy forbidding the posting of any information on its network, he said. Emphasis and link mine
A wiki strikes me as an excellent resource for this type of information analysis. It lets people incorporate new information into the initial analysis in a distributed, but trackable, way. So Analyst 5, for example, can update the analysis immediately when he learns new information, spots a fallacy or spots an incomplete conclusion. And anyone reading the article can look at the tracking information to see who added that new analysis.