A spook’s guide to the psychology of deception (archived)
Related:
How Covert Agents Infiltrate the Internet to Manipulate, Deceive, and Destroy Reputations
The Art of Deception: Training for Online Covert Operations
Military Report: Secretly ‘Recruit or Hire Bloggers’
CENTCOM Team Engages ‘Bloggers’
That commenter on your blog may actually be working for the Israeli government
Ms. Cat’s Chronicles 