Now the intelligence agencies are trying to remedy those problems with something they call Intellipedia, a model based on the popular online, user-generated encyclopedia Wikipedia.

US intelligence czar John Negroponte discussed the database in Washington recently, saying it would allow analysts to collaborate, adding and editing intelligence to create a resource for all 16 US agencies that have access to the top-secret version of Intellipedia.

Since its introduction in April, the classified version of Intellipedia has grown to 28,000 pages and 3,600 registered users, the government said. There are other versions of the database for “secret’’ and “sensitive but unclassified’’ intelligence. US officials said Intellipedia is currently being used to prepare a report on Nigeria. Authorities say they will offer access to Intellipedia to allies Canada, England and Australia.

In theory, Intellipedia, like Wikipedia, is a great idea: Citizen editors, or in this case, intelligence assets, enter their information unfiltered onto the great database. Then it becomes easily searchable by any user. For instance, if the agency preparing the report on Nigeria punches in that country’s name, it could find intelligence that an asset has entered from the field in Africa, or data entered by an analyst in a cubicle in Langley, Virginia. There are other possible uses, as well, the agencies said, such as quickly spreading information about pandemic potential from nation to nation.

Of course, Intellipedia probably has its downsides, just as Wikipedia does. Knowing only what the government tells us about Intellipedia, we don’t know how tight the peer review is. On Wikipedia, administrators will lock users out of an entry if it is being vandalized, typically by partisans, such as the Wikipedia entry on Israel during its war with Hezbollah.

One can only assume the top-secret version of Intellipedia has the same administrative safeguards, or at least a more collegial attitude among its contributors. There is also the concern that intelligence will be politicised, such as happened in the run-up to the war in Iraq.

And not all intelligence is equal or equally sourced. One of Wikipedia’s flaws is that there’s no way of knowing if the entry on Chaucer has been authored by a Chaucer scholar or an English literature undergrad. Presumably, Intellipedia’s authors have a similar range of expertise—they’re not all James Bond and Jack Ryan.

And there is the threat of compromise by hostile hackers, who could plant disinformation designed to throw US intelligence experts and enforcement authorities off track, especially before a planned attack.

Frank Ahrens