It appears that the CIA has taken to blogging about bloggers. I was once told a story about the CIA asking for hypotheticals from people outside of the Agency based solely on news reports. Much like virtual markets, the general consensus tended to be fairly accurate.
Now, with blogs, you have all sorts of people, on their own initiative, offering their views on current events. Once again, it is based only on open source information.
Hope this helps, guys.